Technology News

Nokia N9 Series Launched

2011-07-15T16:27:00.000+07:00

Nokia Launched new smartphone N9 Series, with NFC (near field communication) Technology. Nokia today announced the "beginning of a new era" for the company with the launch of four new mobile phones, including a full-screen touch-based smartphone. "Earlier this year, we outlined a comprehensive strategy to change our course," said Stephen Elop, the president and CEO of Nokia.

"Innovation is at the heart of our strategy and today we took important steps to demonstrate a new pace of innovation at Nokia. It''s the beginning of a new era for Nokia," he added

Nokia N9 Spesification

General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1700 / 1900 / 2100
Announced 2011, June
Status Coming soon
Size Dimensions 116.5 x 61.2 x 12.1 mm, 76 cc
Weight 135 g
Display Type AMOLED capacitive touchscreen, 16M colors
Size 480 x 854 pixels, 3.9 inches

Gorilla glass display

Anti-glare polariser

Multi-touch input method

Proximity sensor for auto turn-off

Accelerometer sensor for UI auto-rotate

Sound Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
Dolby Mobile sound enhancement; Dolby Headphone support
Memory Phonebook Practically unlimited entries and fields, Photocall
Call records Yes
Internal 16/64 GB storage, 1 GB RAM
Card slot No
Data GPRS Class 33
EDGE Class 33
3G HSDPA, 14.4 Mbps; HSUPA, 5.7 Mbps
WLAN Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot
Bluetooth Yes, v2.1 with A2DP, EDR
Infrared port No
USB Yes, microUSB v2.0
Camera Primary 8 MP, 3264x2448 pixels, Carl Zeiss optics, autofocus, dual LED flash
Features Geo-tagging, face detection, touch-focus
Video Yes, 720p@30fps
Secondary Yes
Features OS MeeGo OS, v1.2 Harmattan
CPU 1GHz Cortex A8 CPU, PowerVR SGX530 GPU, TI OMAP 3630 chipset
Messaging SMS (threaded view), MMS, Email, Push Email, IM
Browser WAP 2.0/xHTML, HTML, RSS feeds
Radio No
Games Angry Birds Magic (NFC), Galaxy on Fire 2, Real Golf 2011; downloadable
Colors Black, Cyan, Magenta
GPS Yes, with A-GPS support; Ovi Maps
Java Yes, MIDP 2.1
- MicroSIM card support only
- SNS integration
- Active noise cancellation with dedicated mic
- Digital compass
- TV-out
- NFC support
- Dolby Digital Plus
- MP3/WAV/eAAC+/WMA/FLAC player
- MP4/H.264/H.263/WMV player
- Document editor (Word, Excel, PowerPoint), PDF viewer
- Video/photo editor
- Voice memo/command/dial
- Predictive text input (Swype)
Battery Standard battery, Li-Ion 1450 mAh (BV-5JW)
Stand-by Up to 380 h (2G) / Up to 450 h (3G)
Talk time Up to 11 h (2G) / Up to 7 h (3G)
Music play Up to 50 h

Source:
GSM Arena, Yahoo News

How To Optimizing Apps for Android 3.0

2011-07-05T13:00:00.000+07:00

If you've already developed an application for an earlier version of Android, there are a few things you can do to optimize it for a tablet-style experience on Android 3.0 without changing the minimum version required. Android 3.0 introduces several features that allow you to enhance your user's experience on tablets and similar devices.

Any application you've already published is compatible with devices running Android 3.0, by default, because Android applications are forward-compatible. However, new tablet devices running Android 3.0 are now available to the public and provide users a new Android experience on a larger screen, so you should make sure your application looks and works great on the new platform and new device form-factors.

You can optimize your existing application for Android 3.0 and maintain compatibility with older versions or upgrade your application completely with new APIs.

Get started optimizing android apps.

1. Set up your SDK with Android 3.0.

Install the Android 3.0 platform, new tools, and set up a new AVD.

2. Choose to either optimize or upgrade:

Optimize your app for tablets and similar devices. Read this section if you have an existing application and want to maintain compatibility with older versions of Android. All you need to do is update your manifest file to declare support for Android 3.0, test your application on the new platform, and add extra resources to support extra large screens, as appropriate.
Upgrade or develop a new app for tablets and similar devices. Read this section if you want to upgrade your application to use APIs introduced in Android 3.0 or create a new application targeted to tablets and similar devices. Compared to upgrading to previous versions of Android, there's nothing different about upgrading to Android 3.0. This section introduces some of the key features and APIs you should use to make an application that's fully enhanced for tablets.

3. Consider whether you need to manage the distribution of your application based on screen configuration.
Then review some other issues you might encounter when developing for tablets and similar devices.

How To Install APK From Non Android Market

2011-07-05T01:44:00.000+07:00

If We want to Install APK from non Android market we can't find guidlines from android support. The Android Market, home to tens of thousands of apps, is an amazing resource. However, it’s not the only one. In fact, some of the most incredible apps aren’t available at the Market, and in some cases, never will be due to Google’s guidelines.

STEP 1: Find the non-market app.

This is a broad step, and often you will have discovered the app by accident. If you’re looking, search engines like Google and websites like Droid-Life are a great place to start. Perhaps the best way to find non-Market apps is to be active in an Android community. Android fans love to post about that new cool app they’ve found. There are also websites like Slide Android Market and AndAppStore, which cater to non-market apps and users who do not have access to the Android Market.

STEP 2: Verify that the app is in the right format.

The file you will download has the extension APK. APK stands for Android Package, and it indicates an Android app installer. Other file types will be sources and resources for developers.

STEP 3: Download the APK file to your phone.

Generally, you will download it to the browser’s default download folder. However, location is irrelevant, so place it wherever you find most convenient.

STEP 4: Configure your Android for a non-Market installation.

Press Menu, then Settings, and then Applications. Check the box labeled Unknown Sources.

STEP 5: Download and install an Android file manager.

Note that you can use the Android SDK to install APK files. However, most users will prefer the convenience of a free file manager app. The most common is the free Apps Installer from the Android Market, but there also many great free and paid third-party options.

STEP 6: Install the new app.

Start the file manager, and select the install option. Browse to the downloaded APK file, and then select it. Select OK, and follow the on-screen instructions, if there are any. This is usually a hands-free process.

STEP 8: (Optional) Secure Android.

Press Menu, then Settings, and then Applications. Uncheck the box labeled Unknown Sources.

For those who prefer to use the Android SDK, replace steps #5 and #6 above with the following:

STEP 1: Download and install the Google Android SDK on your PC.

STEP 2: Type adb into the command shell to access the SDK tool (adb.exe).

STEP 3: Install the Android USB drivers.

The Android USB drivers specifically, not general Windows drivers, are necessary for using the SDK.

STEP 4: Connect the phone to the computer via USB.

STEP 5: Disable USB storage.

Press Settings, the SD card & phone storage, and then disable Use for USB storage.

STEP 6: Install the app.

Type adb install full_filepath_and_filename

STEP 7: Enable USB storage.

Press Settings, the SD card & phone storage, and then enable Use for USB storage.

Source:
http://androidhowto.org/

How To Install Blackberry Application

2011-07-04T17:19:00.001+07:00

For all groups of BlackBerry users, there are countless third party applications available that can help modify the BlackBerrys’ functionality to meet their individual needs.There are two ways of installing applications to your BlackBerry. You can download the software over the air (OTA) using the web browser on your device, or you can install an application from your PC using the RIM Desktop Manager.

File Types Of Blackberry Application

.JAD files: An application descriptor that stores information about the application itself and the location of .COD files
.JAR files: a JAR file (or Java ARchive) is used for aggregating many files into one. It is generally used to distribute Java classes and associated metadata.
.COD files: A COD file is a proprietary file format developed by RIM that contains compiled and packaged application code.
.ALX files: Similar to the .JAD file, in that it holds information about where the installation files for the application are located

Installing Blackberry Application Over the air (OTA)

To install OTA, you must have a URL for the sofware you want to install. The URL will point to a JAD file somewhere on the Internet. After entering the URL into the browser on your BlackBerry, it will prompt you to verify that you want to install the application. Say yes, and if all goes well it will install on your BlackBerry.

Installing Used RIM Desktop Manager

The second method of installation uses the RIM Desktop Manager. Applications meant to be installed from the Desktop Manager come with two files: an ALX file and a COD file. First, connect your BlackBerry to your PC using a data cable. Once the device is attached, launch the RIM Desktop Manager. Then launch the Application Loader from inside the Desktop Manager.

Source:
http://crackberry.com/installing-3rd-party-applications

Android 3.1 Feature

2011-07-04T11:05:00.001+07:00

The Android 3.1 platform adds a variety of refinements to make the user interface more intuitive and more efficient to use. Android 3.1 is an incremental platform release that refines many of the features introduced in Android 3.0. It builds on the same tablet-optimized UI and features offered in Android 3.0 and adds several new capabilities for users and developers.

Android 3.1 Performance optimizations

Android 3.1 includes a variety of performance optimizations that help make applications faster and more responsive. Some of the optimizations include:

A new LRU cache class lets applications benefit from efficient caching. Applications can use the class to reduce the time spent computing or downloading data from the network, while maintaining a sensible memory footprint for the cached data.
The UI framework now supports partial invalidates in hardware-accelerated Views, which makes drawing operations in those Views more efficient.
A new graphics method, setHasAlpha(), allows apps to hint that a given bitmap is opaque. This provides an extra performance boost for some types of blits and is especially useful for applications that use ARGB_8888 bitmaps.

Android 3.1 UI refinements

UI transitions are improved throughout the system and across the standard apps. The Launcher animation is optimized for faster, smoother transition to and from the Apps list. Adjustments in color, positioning, and text make UI elements easier to see, understand, and use. Accessibility is improved with consistent audible feedback throughout the UI and a new setting to let users customize the touch-hold interval to meet their needs.

Navigation to and from the five home screens is now easier — touching the Home button in the system bar now takes you to the home screen most recently used. Settings offers an improved view of internal storage, showing the storage used by a larger set of file types.

Source:
http://developer.android.com/sdk/android-3.1-highlights.html

Start Cloud Computing For Small Business

2011-07-02T16:07:00.000+07:00

When most small business owners or new software companies talk about cloud computing, they usually mean an application that runs from the web and not directly from your not-connected-to-the-Internet desktop (software as a service or SaaS).Cloud computing software solutions, for our purposes here, mean software that has a low monthly fee rather than a one-time capital expenditure.Just about any business function you can think of has a cloud based solution, from phone services to marketing to operations to finance.

Cloud computing seems to be a flashy car on a used car lot. As with any new technological initiative that aims to sweep you away, it’s best to take that sweet car on a test drive first.

1. The growth of cloud computing is astounding.
It is estimated that the worldwide cloud computing market is $8 billion with the U.S. market accounting for approximately 40% of that: $3.2 billion. According to Gartner’s 2011 predictions, number one on their list of Top Strategic Technologies is Cloud Computing. Gartner also predicts that the SaaS market will hit $14 billion in 2013.

2. Cloud Computing Software Solutions VS Desktop Applications

The most common reason why small businesses choose cloud computing solutions over desktop applications is this: It is less expensive because you pay a small monthly amount instead of a one-time fee as it works now with traditional desktop software. On a cash-flow basis, it is less costly because your cloud based apps are often slightly less costly than an annual purchase or upgrade for common programs. However, you have to look closely at the pricing plans and details for each application.

Another common reason is that the SaaS application is often a simpler version of something that is installed on your machine and you’re currently using. There are fewer bells and whistles, so to speak, and the developers of many cloud computing apps have created just the basics that customers need to get the specific job done.

Salesforce.com, one of the market leaders in the cloud computing industry, had over 52,000 customers in 2009. Rackspace, a hosting provider, has over 1,000 SaaS apps in its new AppMatcher.com service.

3. Cloud Computing Solutions are available all the time – no matter where you are.

For some business users that operate virtual offices or operate remotely on different machines depending on location and they need the application to be accessible from a web browser. That is one of the biggest advantages of cloud computing– it is available wherever you have access to a computer and browser.

If you are not connected and operating your laptop offline, does the program offer a way to run it offline and synchronize when you are connected again? Many apps have either a mobile app or a widget you can download and run a lighter version of the software.

For example, some Google Apps offer a desktop version called Google Gears, which will sync your data when you are back online. Google Apps, by the way, has over two (2) million businesses and 25 million users in its cloud computing marketplace; including companies like Smartsheet and Batchbook, just to name a couple.

4. Sometimes simple, focused cloud computing solutions will do the trick.

Do you use all the features of your desktop app? If not, a cloud computing application might offer a “forever free” plan that allows you to do the same work as a desktop application, but limited in some way. For example, a billing solution might let you run an unlimited number of invoices, but for only 2 separate clients.

You can find a range of great applications at The Small Business Web. It offers a terrific directory of cloud based applications from accounting to versioning.

5. Be careful about the security of your data.

Many organizations are worried about the associated privacy and security risks that a cloud computing system brings when vital information is made accessible to a third party. Generally, if you operate in an industry that requires greater privacy or security standards and you find a cloud computing app vendor working with your industry, then they’ve likely developed for that standard requirement. However, check the details to fulfill any legal, financial, or ethical concerns.

6. Make sure that your cloud computing vendor is stable and reliable.

Are you sure you want to invest your cash in this particular cloud computing software vendor? How long have they been in business? How many customers do they have? Can you talk to users directly?

You can sometimes read the testimonials and get good information and if the testimonials are real, they will often link to the person who made the comment. While those individuals do not expect to be contacted by every interested prospect of a cloud computing app vendor, you may be able to talk to some of them.

7. Consider the uptime of your cloud computing applications.

Uptime is the time a hosted application’s performance record essentially. Most are in the range of 98-99.9%, which acknowledges that servers go down for maintenance or unexpected problems.
How quickly do they fix the problem? This can be an issue for mission critical applications and you’ll often see the highest uptimes for apps that are in this category. They know how important their service is to customers. These are often covered in what’s known as Service Level Agreements, or SLAs, so read those carefully and discuss changes with the vendor, if needed.

8. Be certain that they have true customer support.

Is there an extra charge for support and maintenance or is that included in your monthly subscription fee? It is usually included, but like any purchase, read the fine print. Check if you have access to a customer support team via phone, email, or social media.

9. Your cloud computing vendor should be flexible.

You can add and subtract users, as needed (some call this scaling where you can increase your software license “seats” incrementally). Your monthly fees are dependent (usually) on how many users you have. Often, your capital outlay to “purchase” cloud based apps is lower than traditional on-premise or desktop apps.

Source:
http://smallbiztrends.com/2010/11/16-questions-to-ask-yourself-before-choosing-cloud-computing-solutions.html

Planning Link Budgeds For Wireless ISP Cell Sites

2011-06-30T02:03:00.000+07:00

The installation of a wireless network requires much the same basic planning as any wired network. The main difference is that the wireless signal requires some additional planning. This planning includes RF path planning, site preparation, and installation of outdoor components such as outdoor units, antennas, lightning protection devices, and cabling suitable for outdoor conditions. Usually, you also need to investigate the zoning laws as well as Federal Communications Commission (FCC). Although the technology implemented in most broadband fixed wireless systems can make use of multipath signals, reducing the effect of obstructions in the path, it is important that the characteristics of the path be carefully examined. With this knowledge, components and network requirements can be correctly planned for your specific application.

General Requirements
A basic requirement is the physical location of the sites at each end of the link. Because microwave signals travel in a straight line, a clear line of sight between antennas is ideal. Frequently, however, the locations of the desired links are fixed. When a clear line of sight cannot be achieved, you must plan accordingly.

Other general site requirements include: Ability to install one or more antennas—Is the roof adequate to support the antenna(s) or will it require structural reinforcement? Will a tower have to be constructed? Are permits required?Possibility of future obstructions—Will trees grow high enough to interfere with the signal? Are there plans to erect buildings between the sites that may obstruct the path?Availability of grounding—Good grounding is important in all areas of the world, but in areas prone to lightning, it is especially critical.

Availability of power—Are redundant power systems available if the area is prone to outages? The planning of a wireless link involves collecting information and making decisions. The following sections will help you determine which information is critical to the site and will be an aid in the decision-making process.

Weather It is important to research any unusual weather conditions that are common to the site location. These conditions can include excessive amounts of rain or fog, wind velocity, or extreme temperature ranges. If extreme conditions exist that may affect the integrity of the radio link, BWE recommends that these conditions be taken into consideration early in the planning process.

Rain and Fog Except in extreme conditions, attenuation (weakening of the signal) due to rain does not require serious consideration for frequencies up to the range of 6 or 8 GHz. When microwave frequencies are at 11 or 12 GHz or above, attenuation due to rain becomes much more of a concern, especially in areas where rainfall is of high density and long duration.

If this is the case, shorter paths may be required. The systems discussed in this guide operate at frequencies below 6 GHz, so rain is not a concern. In most cases, the effects of fog are considered to be much the same as rain. However, fog can adversely affect the radio link when it is accompanied by atmospheric conditions such as temperature inversion, or very still air accompanied by stratification. Temperature inversion can negate clearances, and still air along with stratification can cause severe refractive or reflective conditions, with unpredictable results. Temperature inversions and stratification can also cause ducting, which may increase the potential for interference between systems that do not normally interfere with each other.

Where these conditions exist, BWE recommends shorter paths and adequate clearances. Atmospheric Absorption A relatively small effect on the link is from oxygen and water vapor. It is usually significant only on longer paths and particular frequencies. Attenuation in the 2 to 14 GHz frequency range is approximately 0.01 dB/mile, which is not significant.

Wind Any system components mounted outdoors will be subject to the effect of wind. It is important to know the direction and velocity of the wind common to the site. Antennas and their supporting structures must be able to prevent these forces from affecting the antenna or causing damage to the building or tower on which the components are mounted.

Antenna designs react differently to wind forces, depending on the area presented to the wind. This is known as wind loading. Most antenna manufacturers will specify wind loading for each type of antenna manufactured. Interference An important part of planning your broadband fixed wireless system is the avoidance of interference.

Interference can be caused by effects within the system or outside the system. Good planning for frequencies and antennas can overcome most interference challenges. Co-Channel and Adjacent Channel Interference Co-channel interference results when another RF link is using the same channel frequency. Adjacent-channel interference results when another RF link is using an adjacent channel frequency.

In selecting a site, a spectrum analyzer can be used to determine if any strong signals are present at the site and, if they are, to determine how close they are to the desired frequency. The further away from your proposed frequency, the less likely they are to cause a problem. Antenna placement and polarization, as well as the use of high-gain, low-sidelobe antennas, is the most effective method of reducing this type of interference.

Frequency Band Division Each broadband fixed wireless system is a full-duplex system. Two frequency bands are used to achieve this two-way operation, with the higher frequency band considered the “high” band in the link, and the lower frequency considered the “low” band. The transmitter at one end of the link will use the high band; the transmitter at the other end will use the low band.

Antennas Antennas focus the radio signal in a specific direction and in a narrow beam. The increase in the signal power (compared to an omnidirectional antenna) when it is focused in the desired direction is called gain. Antennas are tuned to operate on a specific group of frequencies. Other specific attributes such as beamwidth and gain are also fixed by the manufacturer. Antennas should be selected and placed according to your site and your application. In general, the larger the antenna, the higher the gain and the larger the mast required. It is best to use the smallest antenna that will provide sufficient protection from interference and enough signal at the far end of the link to provide good reception even with fading.

Other considerations include antenna beamwidth, front-to-side ratios, front-to-back ratios, and cross-polarization rejection. Where interference from other licensees on the same channel or adjacent channels is an issue, narrow beamwidths, high front-to-back and front-to-side ratios, and high cross-polarization rejection are likely to be required. Even when other licensees are not an issue, if you are using a network deployment using the “cell” approach, all these considerations are still important to reduce interference between your own adjacent installations.

Types Several antenna types are appropriate for the type of installation discussed in this guide. Semi-parabolic grid antennas are usually used where wind loading is an issue. Solid antennas should have the option to add a radome to reduce wind loading, as a means of ice protection, where necessary, and to prevent birds from roosting on the antenna feeds.

For short wireless links (or links where the appearance of the antenna is a problem) panel, patch or planar antennas might be appropriate. With these antenna types, the front-to-side, front-to-back, and cross-polarization response are not as good, so it is important to carefully examine interference potential. Consult your antenna vendor and installer for specific information on the antenna types, their use, and their performance.

Antenna Polarization The orientation of the antenna will change the orientation of the signal. The transmitting and receiving antennas should be both polarized either horizontally or vertically. Adjacent antennas on different frequencies can be cross-polarized to help reduce interference between the two, if your operating license permits this.

Diversity and OFDM When transmitted signals follow several paths between the transmitter and the receiver, a condition called multipath occurs. Signals reflect off buildings, water, and other objects, creating multiple paths to the receiver. On long point-to-point radio links, stratification of the atmosphere can create multiple paths by refracting the signals. Because of their longer path lengths, these reflected or refracted signals take longer to arrive at the receiver, where they can interfere with the main signal.

The diversity feature requires the installation of two antennas separated vertically or horizontally (vertical separation works well for longer free-space line-of-sight links, while horizontal separation works best for partially obstructed or non-line-of-sight links).

The signals received by both antennas are combined to greatly enhance the quality of the signal where multipath exists. As a rule of thumb, the separation between antennas using this feature should be a minimum of 100 to 200 times the wavelength of the frequency. The greater distances are preferable. Table 2-1 shows a sample antenna separation calculation.

Table 2-1: Sample Antenna Separation Calculation Frequency (MHz) Wavelength (cm) Wavelength x 100 (m) Wavelength x 200 (m) 5000 6 6 12
Towers When planning antenna placement, it might be necessary to build a free-standing tower for the antenna. Regulations and limitations define the height and location of these towers with respect to airports, runways, and airplane approach paths.

These regulations are controlled by the FAA. In some circumstances, the tower installations must be approved by the FAA, registered with the FCC, or both. To ensure compliance, make sure you visit the FCC’s Antenna Structure Registration website to review regulations regarding antenna structures. Path Planning To get the most value from a wireless system, path planning is essential. In addition to the fact that radio signals dissipate as they travel, many other factors operate on a microwave signal as it moves through space. All of these must be taken into account, because any obstructions in the path will attenuate the signal. Fresnel Zone The characteristics of a radio signal cause it to occupy a broad cross-section of space, called the Fresnel Zone, between the antennas. Figure 2-1 shows the area occupied by the strongest radio signal, called the First Fresnel Zone, which surrounds the direct line between the antennas.
Figure 2-1: First Fresnel Zone

Because of the shape of the First Fresnel Zone, what appears to be a clear line-of-sight path may not be. As long as 60 percent of the First Fresnel Zone is clear of obstructions, the link behaves essentially the same as a clear free-space path. Here Are Some Easy to Use Link Budget Calculators Wireless Connections Link Budget Calculator Zytrax Link Budget Calculator Terabeam Link Budget Calculator Calculating a Link Budget A link budget is a rough calculation of all known elements of the link to determine if the signal will have the proper strength when it reaches the other end of the link. To make this calculation, the following information should be available: Frequency of the linkFree space path lossPower of the transmitterAntenna gainTotal length of transmission cable and loss per unit length at the specified frequencyNumber of connectors usedLoss of each connector at the specified frequencyPath length Free-Space Path Loss A signal degrades as it moves through space. The longer the path, the more loss it experiences. This free-space path loss is a factor in calculating the link viability.

Antenna Gain is an indicator of how well an antenna focuses RF energy in a preferred direction. Antenna gain is expressed in dBi (the ratio of the power radiated by the antenna in a specific direction to the power radiated in that direction by an isotropic antenna fed by the same transmitter). Antenna manufacturers normally specify the antenna gain for each antenna they manufacture.

Cable and Connector Loss There will always be some loss of signal strength through the cables and connectors used to connect to the antenna. This loss is directly proportional to the length of the cable and generally inversely proportional to the diameter of the cable. Additional loss occurs for each connector used and must be considered in planning. Your cable vendor can provide a chart indicating the loss for various types and lengths of cable.

Table A-1 on page A-4 is an example of this kind of chart. Sample Link Budget Calculation The example below is based on the following assumptions: Frequency 5.0 GHz (U-NII) Length of Path 7 miles Free Space Path Loss 131.9 dB Transmitter Power 23.8 dBm (limited by FCC EIRP guidelines) Cable Length
Power Feed Panel to Wireless Transverter
Wireless Transverter to Antenna 50 feet-LMR 400 (~2.6 dB loss per 100 feet at 420 MHz)
10 feet-LMR 400 (~10.7 dB loss per 100 feet at 5.7 GHz) Number of Connectors Used 4 (~ 0.5 dB loss per connector) Antenna Gain 29 dBi transmit, 29 dBi receive Receiver Threshold -76 dBm Required Fade Margin 20 dB (minimum)
The following formulas can be used to determine if the fade margin meets the requirement: fade margin = received signal - receiver threshold
The received signal can be calculated with the formula: received signal = transmitter power - transmitter cable and connector loss + transmitter antenna gain - free space path loss + receiver antenna gain - receiver cable and connector loss
Based on the assumptions in the example, the formula becomes: received signal = 23.8 dBm - 2 dB (10 ft) + 29.0 dB - 131.9 dB + 29.0 dB - 2 dB (50 ft) = -54.1 dBm
The fade margin is then calculated as follows: fade margin = -54.1 dBm - (-76.2 dBm) = 22.1 dBm
A fade margin of 22.1 dBm is above the required fade margin minimum (20 dB) specified for this example.

Source
http://www.bbwexchange.com/turnkey/planning_wisp_link_budgets.asp

Near field communication (NFC) Technology

2011-06-23T16:22:00.001+07:00

Nokia N9 With NFC Technology

NFC (near field communication) is a way of exchanging information between your phone and a device such as an NFC credit card reader, an NFC ticket gate or a small object called an RFID tag, by touching them together. You can use an NFC-enabled phone to make fast, convenient purchases, or as an alternative to a travel card. You can also get information such as news or travel updates by touching your phone to an RFID tag embedded in a "smart" poster – or swap electronic business cards with a new contact simply by touching your phones together.

NFC phones are usually equipped with a smart chip to keep confidential information such as your credit card details or travel card information secure.

You can also use your NFC phone to load blank RFID tags with information and mobile phone services that others can access by touching their phones to them.

Why Use NFC ( Near field communication)

NFC makes it quick and convenient to make payments, and to exchange information with smart posters, pocket RFID tags and other people – just by tapping your phone to another NFC device. With an NFC phone you can:

buy the newspaper in a matter of seconds – ideal in the morning when you are in a hurry to get to work
get timetable information by touching your phone to a smart poster
catch a bus, train or tram load your travel ticket into your phone, then just touch your phone to an NFC ticket gate when you want to get moving
swap contact details and other information with friends and colleagues by touching your mobile phones together
make your own RFID tags containing contact information and links to mobile services like news, weather and stock prices to carry round with you or hand out

In the future NFC phones may also be used as:

Identity documents

Airline tickets

Electronic keys for cars, hotel rooms and office buildings

Source:
http://www.nokia.co.uk/find-products/technologies/nfc

How to: Define Minimum SNR Values for Signal Coverage

2011-06-23T16:00:00.000+07:00

The performance of an RF site survey requires more than just ensuring that users are able to connect to an access point. Learn what signal-to-noise ratio (SNR) to use for defining effective range boundaries.
When performing an RF site survey, it’s important to define the range boundary of an access point based on signal-to-noise (SNR) ratio, which is the signal level (in dBm) minus the noise level (in dBm). For example, a signal level of -53 dBm measured near an access point and typical noise level of -90 dBm yields a SNR of 37 dB, a healthy value for wireless LANs. Don’t let the unit “dB” throw you—it merely represents a difference in two logarithmic values, such as dBm.

SNR impacts performance

The SNR of an access point signal, measured at the user device, decreases as range to the user increases because the applicable free space loss between the user and the access point reduces signal level. The same goes for the signals propagating from the user device to the access point. An increase in RF interference from microwave ovens and cordless phones, which increases the noise level, also decreases SNR.

SNR directly impacts the performance of a wireless LAN connection. A higher SNR value means that the signal strength is stronger in relation to the noise levels, which allows higher data rates and fewer retransmissions—all of which offers better throughput. Of course the opposite is also true. A lower SNR requires wireless LAN devices to operate at lower data rates, which decreases throughput. An SNR of 30 dB, for example, may allow an 802.11g client radio and access point to communicate at 24 Mbps; whereas, a SNR of 15 dB may only provide for 6 Mbps.

Real-world values

My company, Wireless-Nets, has performed extensive testing of wireless LANs at various SNR levels. For instance, we’ve run user-oriented tests to determine the impacts of SNR values on the ability for a user with a typical client radio (set to 30 mW) to associate with an 802.11b/g access point and load a particular webpage. For various SNRs, the following is what we found for the signal strength (found in the Windows connection status), association status, and performance when loading a particular Web page from a wireless laptop. We measured the SNR value from the same laptop and client radio using AirMagnet Analyzer. To ensure accurate comparisons, we cleared the laptop’s cache before reloading the page:

* > 40dB SNR = Excellent signal (5 bars); always associated; lightning fast.
* 25dB to 40dB SNR = Very good signal (3 - 4 bars); always associated; very fast.
* 15dB to 25dB SNR = Low signal (2 bars); always associated; usually fast.
* 10dB - 15dB SNR = Very low signal (1 bar); mostly associated; mostly slow.
* 5dB to 10dB SNR = No signal; not associated; no go.

These values seem consistent with testing we’ve done in the past, as well as what some of the vendors publish.

SNR recommendations

Based on this testing, we recommend using around 20dB as the minimum SNR for defining the range boundary of each access point. That ensures a constant association with fairly good performance when performing typical network functions, such as Web browsing and e-mail synchronization. If you plan to deploy voice over a wireless LAN, then you’ll likely need a higher minimum SNR. For example, Cisco recommends 25 dB for their wireless voice telephony systems. Also, a larger margin (i.e., higher SNR), may be necessary in some venues, especially where there is a great deal of multipath signal propagation, such as manufacturing plants and where airplanes park at airports. Keep in mind that the corresponding level of performance only occurs at the boundary of each access point. Users associating with access points at closer range will have higher SNR and better performance.

When measuring SNRs, use the same client radio and antenna as the users will have if possible. A variance in antenna gain between the survey equipment and user device, for example, will likely result in users having a different SNR (and performance) than what you measured during the survey. Also, some client radios have better transmit power and receive sensitivity than others, which can throw off your results if you don’t use the same client radio as the users will have.

Changes made in the facility, such as the addition of walls and movement of large boxes will affect SNR too. Thus, it’s generally a good idea to recheck the SNR from time-to-time, even after the network is operational. This can be done easily with commercially-available tools. For example, the figure below is a screenshot taken from AirMagnet Survey, with the green and yellow colors indicating acceptable signal coverage areas of an 802.11g network with the tool set to a range boundary of 20 dB. If you find that the SNR is below the minimum value in some areas, such as the gray-shaded areas in the figure, consider installing additional access points or moving existing ones better distribute the signals and fill in the holes.

Update003-Defining_SNR.jpg

Concluding thoughts

The use of a particular SNR value as a requirement for signal coverage is certainly a good practice, and the rules of thumb given in this tutorial are a good starting point. Before making the system operational, however, always perform thorough verification testing of the applications, such as Web browsing, e-mail, and voice telephony, using typical client devices and radios that will actually utilize the network. This provides reassurance that the system will indeed satisfy coverage and performance requirements.

Jim Geier provides independent consulting services and training to companies developing and deploying wireless networks for enterprises and municipalities. He is the author of a dozen books on wireless topics, with recent releases including Deploying Voice over Wireless LANs (Cisco Press) and Implementing 802.1x Security Solutions (Wiley).

Source:
http://www.wi-fiplanet.com/tutorials/article.php/3743986

Samsung Galaxy Tab 10.1

2011-06-22T14:58:00.000+07:00

Samsung Galaxy Tab runs Android 3.0 Honeycomb on a 10.1-inch screen, and physical design is clearly the big punch for this device. The tablet itself is an Nvidia Tegra 2, dual-core gadget running a pure Google version of Honeycomb with no software extensions, so it'll be hard for Samsung to distinguish itself from the Motorola Xoom and LG G-Slate on performance.

Both of those tablets have similar innards.) The software experience is a Honeycomb experience – lots of floating icons and a reliance on big, live widgets dominating a multiple-panel home screen. It's much more complicated than the iPad, but quite good looking.

What matters most here is what the Tab 10.1 is like to handle. The Tab 10.1 is very thin (.44 inches) and made of classy materials, with a textured plastic back that is much easier to grip and less slippery than the 7-inch tablet. I have mixed feelings about the embossed silver "Samsung" badge on the back, but considering I carried around a cherry-red netbook for a year that had an embossed "Samsung" badge, I'm probably not one to talk. It feels very good, not very heavy at 21 ounces, but indeed very large; the 10.1-inch, 1280-by-720 screen is bigger than the iPad's.

Other specs: an 8-megapixel camera on the back and a 2-megapixel one on the front, HSPA+ 21 cellular networking with no voice calling, Wi-Fi 802.11 a/b/g/n, and either 16 or 32GB of storage. All this is backed by a pretty large 6860 mAh battery, but remember, that battery has to power that screen; Samsung didn't give a battery life estimate.

The Galaxy Tab 10.1 is going to set up a very interesting battle of the tablets here in the US, if it does indeed come here. It's the biggest tablet coming to market, but I'll be curious to see if it becomes any carrier's champion. Verizon has the Xoom, T-Mobile has the G-Slate, and Sprint is going its own way with the BlackBerry PlayBook. Will the Galaxy Tab 10.1 be AT&T's declaration of independence from the iPad?

The Samsung Galaxy Tab 10.1 will be coming to Vodafone customers in Europe in March. There are, so far, no plans for a U.S. version or a Wi-Fi-only version, Samsung reps said

Source:
http://www.pcmag.com/article2/0,2817,2380223,00.asp

WhatsApp Messenger : Cross-Platform Mobile Messaging

2011-05-09T11:22:00.000+07:00

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.

In addition to basic messaging iPhone, Android, Nokia and BlackBerry WhatsApp Messenger users can send each other unlimited images, video and audio media messages.
Download WhatsApp .

Source:
http://www.whatsapp.com/

The Amazing Apple iPhone 4

2011-05-07T13:40:00.000+07:00

Apple Computer: "While everyone else was busy trying to keep up with iPhone, we were busy creating amazing new features that make iPhone more powerful, easier to use, and more indispensable than ever. The result is iPhone4. The biggest thing to happen to iPhone since iPhone".

IPhone 4 Specification

Display
• Retina display
• 3.5-inch (diagonal) widescreen Multi-Touch display
• 960-by-640-pixel resolution at 326 ppi
• 800:1 contrast ratio (typical)
• 500 cd/m2 max brightness (typical)
• Fingerprint-resistant oleophobic coating on front and back
• Support for display of multiple languages and characters simultaneously camera, photos, and video
• Video recording, HD (720p) up to 30 frames per second with audio
• 5-megapixel still camera, Tap to focus video or still images, LED flash, Photo and video geotagging
• VGA-quality photos and video at up to 30 frames per second with the front camera

Capacity
• 16GB or 32GB flash drive
Cellular and wireless
• UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz)
• GSM/EDGE (850, 900, 1800, 1900 MHz)
• 802.11b/g/n Wi-Fi (802.11n 2.4GHz only)
• Bluetooth 2.1 + EDR wireless technology
Location
• Assisted GPS, Digital compass, Wi-Fi, Cellular

Nokia E7 Review

2011-04-27T05:32:00.000+07:00

Nokia E7 new smartphone from Nokia, a beautiful, innovative design with everything you need to stay in sync. Nokia E7 with 4" ClearBlack AMOLED touch screen and QWERT, Real-time work and personal emails,Maps with free GPS navigation,8 MP camera and HD video,Fully integrated social networks. If beauty were only screen deep, the Nokia E7 series would stand a good chance in a Miss Handset competition, even up against the likes of the iPhone 4, HTC Desire S and Sony Ericsson Xperia Arc.

This QWERTY keyboard phone boasts a four-inch capacitive touchscreen, AMOLED ClearBlack display and sleek brushed aluminium casing that feels great in the hand. It's just under 14mm thick, but fairly lightweight for its size and depth.

A strong double-thumbed push to the tilt and slide mechanism will reveal the well-spaced, rubber-buttoned QWERTY pad. The hinge is a little stiff, but the solidity is appreciated.

The weight is nicely balanced held portrait, landscape or with the keypad out, and the touchscreen isn't overpowered by unwieldy additional keys.

The soft keys it does have are spare and nicely designed, sticking to a keypad lock (which can be easy to accidentally brush with a palm), camera key, volume rocker and menu button.

Source:
http://www.techradar.com/reviews/phones/mobile-phones/nokia-e7-939505/review

How To Share a Printer from XP to Windows 7

2011-04-26T11:58:00.001+07:00

One common problem I have run into with clients is trying to share a printer connected to a Windows XP machine with Windows 7. There are lots of people out there that have USB connected printers attached to one computer, usually a Windows XP machine.

If you get a new laptop running Windows 7, it makes sense to share that printer so that any computer can print to it. Unfortunately, trying to print to an shared printer on XP from Windows 7 is not as simple as it should be!

In this article I will walk you through the steps for XP to Windows 7 printer sharing. I am assuming your printer is directly attached to a Windows XP machine and you want to print from a Windows 7 machine.

Step 1: First make sure that the printer on the XP machine is shared. You can do this by right-clicking on the printer and choosing Sharing.
Click the Share this printer radio button and give your printer a share name. Make sure is less than 8 characters and does not contain any symbols.

Step 2: Make sure you can see the printer share from the network browsing area in Windows 7. You can do this by going to Control Panel and clicking on Network and Internet.

Then click on View network computers and devices under Network and Sharing Center.

At this point, you should see the name of your XP computer in the list of computers. Mine XP machine is called Aseem.

Double-click on the computer name and you should see your shared printer in the list. Here you can try to add the printer by right-clicking on it and choosing Connect.

If everything goes perfectly, Windows 7 should automatically add the printer to your set of printers. However, if you get a message like “Cannot connect to printer”, follow the next steps.

Step 3: Click on Start and then click on Devices and Printers. At the top, click on the Add a printer link.

Step 4: Next choose Add a local printer. Yes, that sounds counter-intuitive, but this is what you have to do!

Step 5: Next, click Create a new port and choose Local port from the list of options.

Step 6: Click Next and in the Port name box, type in the path to the shared printer. It should be something like \\Aseem\HPXP, where Aseem is the name of your XP machine and HPXP is the shared name of the printer.

tep 7: Now choose the printer driver from the list or download the latest driver for the printer and choose Have Disk. Note that if you printer is a little older, it’s a good idea to download the Windows 7 driver for the printer and click Have Disk.

That’s it! Windows 7 will load the driver and you’ll be able to print to the XP machine from Windows 7! The main things to remember are sharing the XP printer and downloading the latest driver for the printer on the Windows 7 machine.

Source:
http://helpdeskgeek.com/windows-7/xp-to-windows-7-printer-sharing/

Review Android Froyo Smartphones

2011-04-24T22:41:00.001+07:00

Everybody likes to have the latest stuff, and in the Android smartphone world, Android 2.2, aka "Froyo", is the latest stuff. Unlike with iPhones, though, Android phones tend to get their software upgrades in a staggered fashion, so relatively few Android phones have Froyo right now (although manufacturers are promising more upgrades as time goes on.)

First, why do you want Froyo? Aside from the bragging rights, it brings four major features and a host of minor ones. Froyo improves Web browsing speeds, adds voice dialing over Bluetooth, lets you use your phone as a Wi-Fi hotspot (if your carrier is okay with that) and offers an option for Adobe Flash 10.1 in a phone's Web browser (as long as the phone meets certain other requirements.) Google has an official rundown of Froyo's features on the Android developer Web site, and we did hands-ons with Froyo on both the Google Nexus One and the HTC EVO 4G here on PCMag.com.

If you don't see your Android phone on the Froyo list, you may not be out of luck. Samsung has promised Froyo upgrades for its Captivate, Vibrant, Epic 4G and Fascinate phones, though the company hasn't said when. Motorola's Droid X is supposed to get a Froyo upgrade any day now. T-Mobile's MyTouch 3G and MyTouch 3G Slide will get Froyo later this year, as well. Other phones, such as the T-Mobile G1 and many Motorola phones, may never get to version 2.2.

For now, here are your handset options for Froyo in the United States.

Google Nexus One (T-Mobile) : AngleGoogle Nexus One (T-Mobile/AT&T)

Now available only to registered Android developers, Google's short-lived flagship Android phone was the very first phone to receive a Froyo upgrade.

Droid Incredible by HTC : FrontHTC Droid Incredible (Verizon Wireless)
$199.99-529.99

If your hands aren't quite big enough for the Motorola Droid X, try the Froyo-packing HTC Droid Incredible. Seriously, these are both excellent phones, so we're really telling people to choose based on hand size.

HTC Evo 4G (Sprint) : FrontHTC EVO 4G (Sprint)

Sprint's first 4G phone is also Sprint's first Froyo phone, and it's a speedy and powerful way to access the Internet on either of Sprint's high-speed networks.

Motorola Droid 2 (Verizon Wireless) : OpenMotorola Droid (Verizon Wireless)

The original Motorola Droid is no longer on sale, but it's now a full-fledged member of the Froyo posse, including being able to download Flash 10.1 from the Android Market.

Motorola Droid 2 (Verizon Wireless) : FrontMotorola Droid 2 (Verizon Wireless)

Motorola's follow-up to the Droid was the first Android phone to actually launch with Froyo on board, and it's our pick if you're looking for a Verizon Wireless phone with a physical keyboard.

Source:
http://www.pcmag.com/article2/0,2817,2368913,00.asp

Android Phones with 3D Capabilities

2011-04-22T14:06:00.001+07:00

As Android phones continue to gain market share over popular smartphones like Apple’s iPhone and RIM’s Blackberry, several new additions to the Android family have been announced. Sharp’s newest Android offering, which carries the model name “Galapagos,” is slated to be released in Japan later this year.

The Galapagos comes with a host of different features that have become nearly standard amongst Android phones, including an impressive camera shooting both video and still images. The most impressive aspect of this new
handset is the 3D screen, which Sharp hopes will bring such films and 3D content to smartphone users around the globe.

Though the idea of a 3D phone might conjure up images of consumers texting incessantly on their deviceswhilst wearing a pair of 3D glasses, these new products from Sharp don’t require any glasses. The phone is initially going to be released in two different versions, one of which will incorporate a touchscreen. The other device will sport a full QWERTY keyboard. Both phones are tailored to a design conscious consumer, and come in thirteen different color combinations.

While the arrival of a 3D phone is certain to grab the attention of diehard fans of such technology, analysts are divided on whether more phones will be developed with 3D capabilities. Though 3D content is becoming more widespread than it once was the majority of the film and gaming content developed by independent companies does not utilize 3D technology. This lack of content could prove to be detrimental for such a phone, although the device sports the capability to view such material; not very much of it is easily available at
present.

On the other hand, some feel that the phone could encourage the furthered development of 3D content, in addition to encouraging other manufacturers to begin developing similar phones. In addition to the great camera and 3D-capable screen, the Sharp phones include hard-working processors, GPS, and the latest release of the Android operating system. As Android phones have become more and more advanced, they’ve already begun claiming former users of other popular smartphone devices. With the introduction of 3D Android phones, some feel that phones running the wildly popular OS will finally overtake their competitors.

Sharp has also addressed some of the concerns regarding the lack of available 3D content by signing several partnerships with gaming companies. These developers, which include Namco Bandai and Capcom, will create 3D games that will be available for the device. In fact, Capcom is expected to bundle games with the smartphone when it is released later this year.

As a Japanese company, it makes sense that the initial release of the new Galapagos phone is taking place in Japan. The company has yet to release plans to introduce the state-of-the-art phones in the United States, though many consumers are hoping that such a decision takes place in the months to come. Much of that decision will likely be based on how well these new phones do in the Japanese marketplace.

Source:
http://www.androidmobilephone.com/sharp-unveils-android-phones-with-3d-capabilities

Samsung Galaxy S II Review

2011-04-21T15:53:00.001+07:00

Samsung on Sunday night announced the Samsung Galaxy S II phone and the Samsung Galaxy Tab 10.1, a new Android-powered cell phone and tablet that both feature dual-core processors.

We spent a little while with both devices at Mobile World Congress, and while they're impressive, they aren't mind-blowing. Samsung's Galaxy S phone rocked America with a new level of Android elegance, and the Galaxy Tab was the first decent Android tablet. These devices enter a much more competitive marketplace. But they're both physically beautiful, which may make the difference

Samsung Galaxy S II

First, the phone. The Galaxy S II feels a bit like the Samsung Infuse 4G for AT&T, with its super-thin body and textured back. It uses a new Samsung dual-core processor rather than the Nvidia model I've seen elsewhere, and it's much thinner and more elegant than the other dual-core phones I've seen so far, which include the Motorola Droid Bionic, Motorola Atrix and LG Revolution. At 0.33 inches, it may actually be the thinnest phone on the U.S. market. That is, if it ever comes to U.S. shores - this evening's announcement specifically excludes the USA.

The Galaxy S II's 4.27-inch, 800-by-480 Super AMOLED Plus screen looks rich and beautiful; colors seem super-saturated. It's not as high-res as the Motorola Atrix's 960-by-540, though. The phone has a 2-megapixel camera on the front and an 8-megapixel camera capable of 1080p video capture on the back. Interest access is fast with an HSPA+ 21 modem. The Galaxy S II will come in 16- and 32-GB models (there's also a memory card slot under the back cover) and NFC, interestingly, is an option.

The phone runs Samsung's TouchWiz skin over Android 2.3 Gingerbread, and Samsung has poured a lot of new apps into the new version. Samsung used to have Media Hub and Social Hub. Now, it also has Reading Hub (which includes the PressReader newspaper app and the Kobo e-book app), Music Hub (a music store) and Games Hub, an alternative to Android Market for games that are so big that Google won't allow them in the market. How that will interact or overlap with Nvidia's very similar Tegra Zone remains to be seen.

There's also some fresh software here from Cisco: this will be one of the first Android phones to actually run a Cisco VPN client, and it also has enterprise Wi-Fi calling and WebEx login capabilities.

The phone I handled was extremely pre-release, so I can't make any promises about performance. Samsung did make a promise about upgrades, though, with reps saying that the ongoing disaster involving upgrading the current Galaxy S line to Android 2.2 "will never happen again."

The more I think about the Galaxy S II, the more I like it. That doesn't surprise me; the Galaxy S grew on me too, eventually becoming my personal phone. If Samsung can bring this to market quickly and solve their upgrade problem, they may have the best balance of power and style on the market. The Galaxy S will arrive this month in Europe and Asia; Samsung isn't announcing U.S. plans.

Source:
http://www.pcmag.com/article2/0,2817,2380223,00.asp

Step By Step Setup BlackBerry PlayBook

2011-04-20T16:50:00.001+07:00

Want to know what it’s like to take brand new BlackBerry® PlayBook™ tablet out of the box and set it up for the first time? Follow this handy visual guide to learn how to get started.

Step 1 – Plug it in!

As soon as you unpack your BlackBerry PlayBook tablet, plug it into a power outlet to ensure that you have enough power to complete the setup process.

Step 2 – Set up your Wi-Fi network connection
Any Wi-Fi networks that are in range will appear in the listing along the left side of the screen. If you don’t see your preferred Wi-Fi network in the list, it might have a hidden SSID. If that’s the case, tap “Manually Connect to Network” and you’ll be able to setup a custom Wi-Fi connection to your network as shown in the screenshot above.

You can also use a WPS (Wi-Fi Protected Setup) connection, which allows you to use secure connection buttons on your Wi-Fi router and/or secure PIN codes instead of manually specifying your Wi-Fi network connection. If you aren’t familiar with WPS, I would recommend reviewing the user guide that came with your wireless router for information.

After you’ve made a successful Wi-Fi connection, swipe along the bottom of the BlackBerry PlayBook tablet screen to move to then next step in the Setup process.

Step 3 – Specify the current Date and Time
The next step in the setup process will ask you to confirm the correct date and time. You can set the time manually, or specify the option to automatically set your date and time using your Wi-Fi network connection.

Step 4 – Review and accept the BlackBerry ID AgreementFrom the “Country” drop-down list, please select your country location and preferred language. You’ll then be presented with the BlackBerry ID Agreement. After you have reviewed the agreements and are comfortable with agreeing to its terms, tap “I Agree” to confirm your acceptance. You can then swipe and advance to the next screen.

Step 5 – Create or Sign In with your BlackBerry IDAfter accepting the BlackBerry ID agreement, you’ll be asked to sign into your BlackBerry ID account If you don’t have a BlackBerry ID account, tap the “Create a BlackBerry ID” link. This will open up a new wizard and allow you to create and register a BlackBerry ID account.

Step 6 – Download the System Update
After you’ve signed in using your BlackBerry ID, your BlackBerry PlayBook will automatically start downloading the latest software available. After the download completes, your BlackBerry PlayBook will automatically install the software update. It is important that your BlackBerry PlayBook remain connected to a power source during this entire process. Once the installation is complete and your PlayBook restarts, you will be using the most up-to-date software.

Step 7 – BlackBerry Bridge Setup (for current BlackBerry smartphone users)
After your BlackBerry PlayBook tablet has successfully installed the system update, the next step will help you set up BlackBerry® Bridge. This feature will allow you to connect your BlackBerry PlayBook tablet to your BlackBerry smartphone so you can access your email, calendar, contacts and other data directly from your BlackBerry PlayBook tablet. An important thing to remember here is that in order to use BlackBerry Bridge, you must be using a BlackBerry smartphone that uses BlackBerry® Device Software 5.0 or later. If don’t know which version of BlackBerry device software you are using, check out this knowledge base article – How to check the version of the BlackBerry Device Software installed on the BlackBerry smartphone. (If you don’t own a BlackBerry smartphone, please skip this step. We can think of lots of reasons you should own a BlackBerry smartphone and a BlackBerry PlayBook tablet – BlackBerry Bridge among them – but we’ll settle for sending you here for more info.)

If you tap Setup, you’ll first be asked to choose a name for your BlackBerry PlayBook tablet. The next step will show you how to install the BlackBerry Bridge application on your BlackBerry smartphone.

Once completed, you’ll then be prompted with instructions that show you how to “pair” your BlackBerry smartphone and BlackBerry PlayBook tablet and start using BlackBerry Bridge. As you can see, it’s as simple as scanning a barcode to get your BlackBerry smartphone and BlackBerry PlayBook tablet paired together!

Step 8 – Learning the BlackBerry PlayBook Tablet Basics
The final part of the setup process allows you to access several tutorials that will help you get the most of your BlackBerry PlayBook. All you need to do is tap on a topic of interest, and you’ll able to take an interactive tutorial. If you’re pressed for time and don’t have a chance to review these tutorials, you can view them later from within the “Help” application.

Source:
http://blogs.blackberry.com/2011/04/blackberry-playbook-setup/

Stay Connected With Ipad Include Wifi And 3G

2011-04-20T00:35:00.001+07:00

iPad with Wi-Fi is ideal if you have a wireless high-speed Internet router in your home, or if you’ll be using your iPad near a wireless hotspot — in a coffee shop or school library, for example.

IPad with Wi-Fi + 3G includes Wi-Fi connectivity as well as 3G connectivity. 3G uses cellular signals — the same signals your cell phone uses — to connect to the Internet. Choose an iPad with Wi-Fi + 3G if you’ll be spending time in places without Wi-Fi hotspots, such as outdoors or on your morning commute.

Choose your iPad by carrier

If you decide on an iPad with Wi-Fi + 3G, be sure to select the model that corresponds with the carrier you’d like to use for 3G service. The iPad model you purchase is specially configured to work with either AT&T or Verizon — not both. So while you don’t have to activate 3G service right away, you should choose your iPad with Wi-Fi + 3G according to the carrier you prefer.

When you decide to activate 3G data service, you can choose the amount of data per month you want to buy — with no long-term contract. So if you have a business trip or vacation approaching, just sign up for the month you’ll be traveling and cancel when you get back.

Turn on 3G data Or turn it off Your Ipad

Sign up.Tap Settings and choose Cellular Data. Then select a plan and enter your payment information.

Check your usage.iPad lets you know when you’re about to reach your data limit so you can add more.

Adjust your plan.If you want more data, you can sign up for a different plan — or cancel 3G data service altogether — anytime, right from your iPad.

Source:
http://www.apple.com/ipad/3g/

Android 3.0 For New User

2011-04-19T17:09:00.001+07:00

Android 3.0 is a new version of the Android platform that is specifically optimized for devices with larger screen sizes, particularly tablets. It introduces a brand new, truly virtual and “holographic” UI design, as well as an elegant, content-focused interaction model.

Android 3.0 builds on the things people love most about Android — refined multitasking, rich notifications, Home screen customization, widgets, and more — and transforms them with a vibrant, 3D experience and deeper interactivity, making them familiar but even better than before.

The new UI brings fresh paradigms for interaction, navigation, and customization and makes them available to all applications — even those built for earlier versions of the platform. Applications written for Android 3.0 are able to use an extended set of UI objects, powerful graphics, and media capabilities to engage users in new ways.

System Bar, for global status and notifications

Across the system and in all applications, users have quick access to notifications, system status, and soft navigation buttons in a System Bar, available at the bottom of the screen. The System Bar is always present and is a key touchpoint for users, but in a new "lights out mode" can also be dimmed for full-screen viewing, such as for videos.

Action Bar, for application control

In every application, users have access to contextual options, navigation, widgets, or other types of content in an Action Bar, displayed at the top of the screen. The Action Bar is always present when an application is in use, although its content, theme, and other properties are managed by the application rather than the system. The Action Bar is another key touchpoint for users, especially with action items and an overflow dropdown menu, which users frequently access in a similar manner in most applications.

Customizable Home screens

Five customizable Home screens give users instant access to all parts of the system from any context. Each screen offers a large grid that maintains spatial arrangement in all orientations. Users can select and manipulate Home screen widgets, app shortcuts, and wallpapers using a dedicated visual layout mode. Visual cues and drop shadows improve visibility when adjusting the layout of shortcuts and widgets. Each Home screen also offers a familiar launcher for access to all installed applications, as well as a Search box for universal search of apps, contacts, media files, web content, and more.

Recent Apps, for easy visual multitasking

Multitasking is a key strength of Android and it is central to the Android 3.0 experience. As users launch applications to handle various tasks, they can use the Recent Apps list in the System Bar to see the tasks underway and quickly jump from one application context to another. To help users rapidly identify the task associated with each app, the list shows a snapshot of its actual state when the user last viewed it.
Redesigned keyboard

The Android soft keyboard is redesigned to make entering text fast and accurate on larger screen sizes. The keys are reshaped and repositioned for improved targeting, and new keys have been added, such as a Tab key, to provide richer and more efficient text input. Users can touch-hold keys to access menus of special characters and switch text/voice input modes from a button in the System Bar.
Improved text selection, copy and paste

When entering or viewing text, a new UI lets users quickly select a word by press-hold and then adjust the selection area as needed by dragging a set of bounding arrows to new positions. Users can then select an action from the Action Bar, such as copy to the clipboard, share, paste, web search, or find.

Source:
http://developer.android.com/sdk/android-3.0-highlights.html

Step By Step Install Wordpress News Ticker Plugin

2010-04-14T16:12:00.001+07:00

News Ticker Plugin used to Inserts a fading or sliding text banner (ticker) with Posts, Entries or Comments RSS feeds or Images. Wordpress News Ticker plugin is a jquery based wordpress plugin which is used to display wordpress post with fading effect.Wordpress News Ticker Plugin Version: 1.0 This is first version of this plugin having options for 1]Width of the News Ticker. 2]Border Size and Color 3]Select Post Category to show posts in News Ticker. 4]Show Images or not in News Ticker.

Step By Step Install News Ticker Plugin in your wordpress blog:
1] Download Latest Release from Wordpress News Ticker Plugin
2] Unzip the file.
3] Upload the “wordpress-news-ticker-plugin” folder to the “/wp-content/plugins/” directory. (DO NOT CHANGE ANY FILE OR FOLDER NAMES)
4] Activate the plugin through the “Plugins” menu in WordPress.
5] Add the folowing code anywhere within your theme where you want the content gallery to be displayed:

Updating Options News Ticker Plugin

Login to wp-admin and you can find “Wordpress News Ticker” inside Settings tabs.
Go to that page then you can manage all the options of this plugin from that page.
1] News Ticker Width in Pixels:

You can specify width of the news ticker here.

2] News Ticker Box Border in Pixels:
You can specify border of the news ticker box

3] News Ticker Border Color:
You can specify border Color of the news ticker in HEX like #b00000

4] News Ticker Heading Color (use #hex or specify color name) :

You can specify News Ticker Heading Color of the news ticker in HEX like #b00000

5] News Ticker Category Selection :

You can select here either here to show latest post in the news ticker or from specific category.
If you select the latest post checkbox then latest post will be showed in the news ticker. And if you dont then posts from specific category will be displayed.

6] Number of posts in News Ticker :
You can specify here number of post that will be displayed in the news ticker. By default only 3 visible at a time. and It will rotate in the number of posts.

7] Image Settings:

If you dont want to show images in the News Ticker area then just uncheck the checkbox.

8] Default Image Settings:

By default First image from post is resized and displayed in the news ticker area for each post. If you dont have image in your post then the default image will be displayed. You can set your default image by entering full path of the image.

Notes:
If you use javascript in your wordpress themes like as navigation’s dropdown, maybe will crash with this plugin please remove jquery in plugin directory.

Actually there was already called jquery in the header and this plugin calling it self another jquery file which is conflicting with each other. Just removed the plugin file and its working fine.

Source:
http://www.snilesh.com/resources/wordpress/wordpress-plugins/wordpress-news-ticker-plugin/

Open Proxy Server List

2010-04-13T17:20:00.000+07:00

Companies and ISPs often use caching in proxy servers to reduce the load on their networks. These proxy servers are often configured to proxy any port, with little regard to security. If nothing is blocking connections from the outside, it is possible to detect the vulnerable server by scanning the ports of a range of IP addresses.

Misconfigured Servers

Often, a proxy server is open because it has not been configured properly. Most of open proxy servers are not supposed to be public. The person that configured the server was not aware of the potential problems and security risks. It is very common to for a novice administrator to set up a proxy with access rights that allow anyone to connect. To close a proxy server it is necessary to force users to connect from one IP address or a range of IP addresses. An alternative is to require users to use a user name and password.
'Honey Pots' or 'Honey Proxies'

Everything that is done on or through the open proxy server can be logged and traced. A honey pot is an open proxy server intentionally deployed by security professionals to lure hackers and track their every move. A honey pot can also be installed by a hacker. A hacker can put a proxy server up on his, or a victim's computer and wait for a scanner to find it. Sending spam e-mail trough a honey pot proxy exposes the sender's activity. When a spammer uses the proxy to send bulk email, it is possible to collect the content of the spam and report the spammer to his ISP.

Security Risks

When you use an open proxy server, your computer is making a direct connection to another computer. You do not know who is in control of the remote computer. If you are using proxy servers from open proxy lists, you could be trusting your email messages, passwords or other sensitive information to a person running the server. Someone can be watching the unencrypted information you are transferring over the network.

Lists of Open Proxies

To find available proxy servers, it is not necessary to scan a range of IP addresses. There are many lists available that are frequently updated. The servers on those lists are usually on a list one day and gone the next. When the network bandwidth drastically increases, the open proxy problem is easily found and resolved.

* http://directory.google.com/Top/Computers/Internet/Proxies/Free/?il=1
* http://tools.rosinstrument.com/proxy/
* http://www.stayinvisible.com/
* http://www.multiproxy.org/
* http://www.openproxies.com/
* http://www.blackcode.com/proxy/

There are programs available on the Internet that automatically redirect your traffic through different proxies. Some of these programs chain proxies together for additional protection. One of them is SocksChain. See the SocksChain Application topic for more information.

Try , Proxy server From http://www.xroxy.com/proxylist.htm :

	Port	Type	SSL	Country	Latency (msec)
Get your premium HTTP(s) proxy! for 3 day free trial now!
	1080	Socks4	true	China	30
	1080	Socks5	true	Iran	30
	1080	Socks5	true	Denmark	30
	80	Anonymous	false	China	1859
	3124	CoDeeN	false	United States	449
Proxy 4 Free : Proxz lists : Free Proxy : Anonymity Checker : My-Proxy : Free Proxy Lists
	3127	CoDeeN	false	United States	381
	3127	CoDeeN	false	United States	2896
	3127	CoDeeN	false	Canada	512
	3124	CoDeeN	false	Japan	1140
	80	Transparent	true	Great Britain (UK)	355

Source:
http://www.postcastserver.com/help/Open_Proxy_Servers.aspx
http://www.xroxy.com/proxylist.htm

Wireless Link Interference Problem Solving

2010-04-09T09:09:00.000+07:00

Wireless Link Interference is caused by transmission sources near the channel you are transmitting on. It can be identified by signal strength and frequency. Unwanted transmissions, interference, may confuse your receiver or cover up the signal you are trying to receive.There are 14 total frequency sub-channels available for the wireless radios in the 2.4 GHz band, as listed in the chart below. Although there are several different frequency channel settings, there is a slight overlap between the channels.

For example, there are three non-overlapping channels available in the FCC regulatory domain. When choosing frequency channels for wireless stations in the vicinity of each other, you should choose frequency channels that are several channels apart from each other (e.g. Channels 1, 6, and 11). Channels 12-14 are for use outside the US.

To reduce interference thus improving radio reception, we can do:
- Choose non overlapping chanel
- Use Bandpass filters

Source:
http://www.l-com.com/content/Bandpass_Filters_FAQ.html

Manage Connections Online with Easy WiFi

2010-04-07T13:24:00.000+07:00

If you're an avid Wi-Fi hotspot user, or roam between multiple wireless networks, you might want to consider using Easy WiFi to simplify the process. Offered by Devicescape, Easy WiFi makes it easier to connect to and use multiple public and private Wi-Fi networks.Once you input login credentials for Wi-Fi hotspot providers, the client application will automatically connect to the networks when in range and enter the credentials for you. You don't have to keep entering the username and password to use the hotspot. Easy WiFi also supports private networks. You can input the network name and security settings for other networks you use. Easy WiFi will automatically connect to those networks as well.

The best part of the Easy WiFi solution is that you enter the hotspot credentials and private network details in your account on its site. The data is stored on is central server. Therefore, all your computers and mobile devices are automatically configured with all your networks.

The Easy WiFi solution supports many of the popular devices and platforms:

* Windows
* Mac OS X
* iPhone & iPod touch
* Android
* Windows Mobile
* Nokia S60 Phones

In addition to acting as your global Wi-Fi connection manager, Easy WiFi offers a directory of hotspots. It actually automatically connects you to those it detects. Additionally, you can search its hotspot map for locations where you can get wireless Internet. On some devices, this map is built into the Easy WiFi client application, whereas on others you'll just have to browse the map on the site.
Sign Up for an Account and Add Networks

First, you should sign up for an account on their website. Then while you're on your account, you can add your hotspot and private networks. To get started, select the My WiFi Networks link and click the add a network button under the hotspot or private network lists.

One important note to keep in mind: if adding an open hotspot that does not require a username and password, treat it as a private network.

When adding a hotspot account, you can search for the name of the hotspot network or leave the search field blank to browse all the supported hotspot providers. Once selected, you'll be prompted to enter the login credentials, such as a username and password, you already have established with the hotspot provider.

If the hotspot network is not listed in their directory, it is not currently configured with their service. If you have a free moment, you can actually help them add the location or provider to their database, or let someone from the network know.

When adding a private network, you'll give it a name and enter its SSID (network name) and security settings. Networks using WEP or WPA-PSK (Personal) encryption are supported, as well as open or unencrypted networks. However, WPA-Enterprise connections with 802.1X WPA2 networks aren't supported, and WPA2 networks aren't at all.
Download the Easy WiFi Client and Register Devices

For all the magic to happen, you must install and register the Easy WiFi client program on your devices.

For the iPhone & iPod touch, use the iTunes App Store. On Nokia S60 or Windows Mobile phones, go to my.devicescape.com and select the download button and follow the instructions. For Android phones, you can get Easy WiFi directly from searching the Android Marketplace on your phone.

On Windows or Mac OS X, you can download the client from the Easy WiFi Download page.

After you have the client installed, you must register the device with the Easy WiFi service.

To register a Windows computer, open the Easy WiFi program and click the Signup to add more Wi-Fi link on the main window. This will take you to an Easy WiFi sign-up/login page. If you already created an account like recommended earlier, you want to login with your username and password using the form on the top of the page. After you login, it should say it has added the device and it will be listed on the My Devices page.

For help on setting up your mobile devices, refer to their manuals:
# iPhone & iPod touch
# Windows Mobile
# Nokia S60 devices (3rd edition & 5th edition.)
Let It Do Its Magic

Now that everything is configured, sit back and let Easy WiFi do its magic. When you're within range of a hotspot or private network you added or an Easy WiFi location, it should automatically connect to it when you aren't connected to any other network. However, remember some devices and operating systems don't support all the features.

Source :
http://www.wi-fiplanet.com/tutorials/article.php/3865301

Lenovo Thinkpad R Series Feature & Driver Download

2010-03-30T10:15:00.001+07:00

Lenovo Thinkpad R Series models offer affordability and great performance, backed by the legendary ThinkPad design. Available in a variety of display sizes and form factors, R Series has something to meet most every business or home office need.
ThinkPad R series notebooks are equipped specifically for home office buyers. No IT department? No problem. These systems provide easy-to-use and easy-to-manage security, connectivity and other features critical to working in today's networked world.

Lenovo Thinkpad Core technology

ThinkPad R Series notebooks are available with Intel® Centrino® Duo Mobile Technology – including the Intel® Core™2 Duo processor – which can deliver greater performance, enhanced manageability, improved energy efficiency and longer battery life.

Other technology features available on ThinkPad R Series notebooks include:
* Intel Turbo Memory – Boosts performance and speeds boot times.
* Integrated or discrete graphics – Intel® integrated graphics are ideal for Web browsing and business appplications. Or for extra horsepower such as 3D applications, try the discrete graphics solutions from NVIDIA.
* High-resolution widescreen displays – Bright, easy-to-view displays up to 14.1’’ WXGA+ (1440x900) and 15.4’’ WSXGA+ (1680x1050).

Lenovo Thinkpad R series Driver

Lenovo Thinkpad R Series Driver available on Lenovo Support.
1. Lenovo Thinkpad R Series Bios Driver Download

2. Lenovo Thinkpad R Series Audio Driver Download

3.Lenovo Thinkpad R Series Card Reader Driver Download

4.Lenovo Thinkpad R Series Bluetooth Driver Download>

5.Lenovo Thinkpad R Series Modem Driver Download

6. Lenovo Thinkpad R Series Ethernet/Lan Card Driver Download

7.Lenovo Thinkpad R Series Wireless Driver Download>

BlackBerry Storm Smartphone Feature

2010-03-27T10:41:00.000+07:00

The BlackBerry® Storm2™ 9520 smartphone uses next generation SurePress technology. Type on a virtual, full QWERTY keyboard in portrait or landscape modes. Enjoy better typing accuracy and a more natural feel for a touch-screen experience like no other.Link to wireless networks or hotspots with Wi-Fi connectivity. While away from your regular home or work coverage areas, you can still access streaming audio and video1, BlackBerry® data services and more.

BlackBerry Storm Available Features

* Wi-Fi® Enabled1
* 3.2 MP Digital Camera
* Video Camera Capabilities
* Supports BlackBerry App World™
* Bluetooth® Enabled
* Multimedia Player
* SMS/MMS
* Wireless Email
* Organizer
* Browser
* Phone
* Corporate Data Access

BlackBerry Storm Size & Weight

Height: 4.43 inches (112.5 mm)
Width: 2.45 inches (62.2 mm)
Depth:0.55 inches (13.95 mm)
Weight: BlackBerry® Storm2™

9550 smartphone:
5.64 ounces (160 grams)
BlackBerry® Storm™
9530 smartphone:
5.5 ounces (155 grams)

BlackBerry Storm Display

* High resolution 480 x 360 pixel color display
* 3.25” (diagonally measured)
* Transmissive TFT LCD
* Supports over 65,000 colors
* Dynamic hardware brightness control1

BlackBerry Storm Camera & Video Recording

* 3.2 MP camera
* Flash
* Auto-focus
* 2x digital zoom
* Image stabilization1

BlackBerry Storm Battery & Battery Life

BlackBerry Storm2™ 9550:

* Standby time: GSM: 12.7 days (305 hours), UMTS: 11.7 days (280 hours), CDMA: 11.2 days (270 hours)
* Talk Time: GSM: 5 hours, UMTS: 6
hours, CDMA: 5.5 hours
* Battery: 1400 mAhr removable/rechargeable lithium-ion battery

BlackBerry Storm™ 9530:

* Standby time: 15 days (356 hours)
* Talk Time: 6 hours
* Battery: 1400 mAhr removable/rechargeable lithium-ion battery

BlackBerry Storm GPS & BlackBerry Maps

* Includes BlackBerry® Maps
* BlackBerry Storm2 9550: Integrated
GPS with assisted-GPS capabilities
* BlackBerry Storm 9530: Stand-alone and assisted GPS

BlackBerry Storm Memory

BlackBerry Storm2:

* 2 GB Embedded Multimedia Card
* 256 MB Flash Memory

BlackBerry® Storm™ 9530:

* 1 GB Embedded Multimedia Card
* 128 MB Flash Memory

BlackBerry Storm Wi-Fi

Only on BlackBerry Storm2 9550:

* 802.11b/g enabled
* 802.11 infrastructure mode; ad-hoc mode is to
be disabled
* 802.11d
* 802.11i including EAP-TLS, PEAP, EAP-TTLS/MS-CHAPv2, PEAPv0/MS-CHAPv2,PEAPv1/EAP-GTC

BlackBerry Storm Data Input & Navigation

* Navigation: SurePress™ touch screen
* BlackBerry Storm2 9550: On screen keyboard: portrait SureType®, QWERTY and multi-tap, landscape QWERTY, portrait QWERTY
* BlackBerry Storm 9530: Portrait SureType and multitap, landscape QWERTY, portrait QWERTY
* Dedicated keys: Send, End, Menu, Escape, Left/right convenience keys (default voice activated dialing and camera), 2X Volume/Zoom, Power/Lock, Mute

BlackBerry Storm Voice Input & Output

* 3.5mm stereo headset capable
* Integrated speaker and microphone
* Hands-free headset capable
* Bluetooth headset capable
* Integrated hands-free speakerphone
* Rated for hearing aids (PDF): M3

BlackBerry Storm Media Player

* Video format support: MPEG4 H.263, MPEG4 Part 2 Simple Profile, H.264, WMV
* Audio format support: MP3, AAC, AAC+, eAAC+, WMA, WMA ProPlus
* 3.5mm Stereo Headset Capable

BlackBerry Storm Ringtones & Notifications

* Tone, vibrate, on-screen or LED indicator
* User configurable notification options
* 32 polyphonic ringtones – MIDI, MP3

BlackBerry Storm Bluetooth

* BlackBerry Storm2 9550: Bluetooth v2.1+EDR1
* BlackBerry 9530: Bluetooth v2.0
* Mono/stereo headset, hands-free, phone book access profile and serial port profile supported
* Bluetooth stereo audio (A2DP/AVCRP)
* Dial Up networking

BlackBerry Storm Security
* Password protection
* Screen lock

BlackBerry Storm Wireless Networks
* Quad-band: 850/900/1800/1900 MHz GSM®/GPRS/EDGE networks
* Single-band: 2100 MHz UMTS/HSPA networks
* Dual-band: 800/1900/ MHz CDMA/Ev-DO Rev A networks

BlackBerry Bold 9700 Specification

2010-03-26T11:18:00.000+07:00

Blackberry Smartphone Bold 9700 series have feature Trackpad navigation,Bright, hi-resolution screen, Full QWERTY keyboard, 3G technology,Wi-Fi® and Bluetooth® enabled, 256MB flash memory,3.2 MP digital camera with,video camera,Multimedia player,Wireless email,Organizer,Browser,Phone,SMS/MMS and MicroSD card reader.

Physical Size and Weight

Height: 4.29 inches (109 mm), Width:2.36 inches (60 mm),Depth:0.56 inches (14.1 mm)
Weight:4.30 ounces / 122 grams(including battery)3.17 ounces / 90 grams(without battery)

BlackBerry Bold 9700 Battery & Battery Life

* Battery: 1500 mAh removable/rechargeable lithium-ion battery
* Talk Time: Up to 6 hours (GSM and UMTS)
* Standby Time: Up to 21 days/504 hours (GSM), Up to 17 days/408 hours (UMTS)
* Music Playback Time: Up to 38 hours

BlackBerry Bold 9700 Data Input & Navigation

* 35 key backlit QWERTY keyboard
* Dedicated Keys: Send, End, VAD (User Customizable), Camera (User Customizable), 2 x Volume/Zoom
* Trackpad - Located on front face of device, ESC Key to the right, Menu to the left
* Intuitive icons and menus

BlackBerry Bold 9700Voice Input Output

* Integrated speaker and microphone
* Hands-free headset capable
* Bluetooth headset capable
* Integrated Hands-Free Speakerphone
* Rating for hearing aids (PDF): M3, T3 (in cellular bands only)

BlackBerry Bold 9700 Media Player

* Video format support: XviD partially supported, H.263, H.264, WMV3, MPEG4, Sorenson Spark & On2 VP6 (Flash support)
* Audio format support: .3gp, MP3, WMA9 (.wma/.asf), WMA9 Pro / WMA 10, MIDI, AMR-NB, Professional AAC/AAC+/eAAC+

BlackBerry Bold 9700 Ringtones Notifications

* Tone, vibrate, on-screen or LED indicator
* Notification options are user configurable
* 32 Polyphonic Ringtones – MIDI, SP-MDI, MP3, WAV

BlackBerry Bold 9700 Bluetooth

* Bluetooth® v2.1
* Mono/Stereo Headset
* Handsfree
* Serial Port Profile
* Bluetooth Stereo Audio (A2DP/AVCRP)
* Bluetooth SIM Access Profile supported

BlackBerry Bold 9700 Security

* Password protection
* Screen lock
* Sleep mode
* Optional support for S/MIME

BlackBerry Bold 9700 Wi-Fi

* 802.11b/g enabled
* Wi-Fi Alliance Certifications: WPA/WPA2 Personal and Enterprise, WMM, WMM Power Save, Wi-Fi Protected Setup
* Cisco CCX certification
* Wi-Fi access to BlackBerry® Enterprise Server
* Wi-Fi access to BlackBerry® Internet Server
* Direct IP web browsing over Wi-Fi

BlackBerry Bold 9700 Wireless Networks

* 3G (HSDPA) compatible
* UMTS: 2100/1900/850/800 MHz (Bands 1,2,5/6), 2100/1700/900 MHz (Bands 1,4,8)
* GSM: 1900/1800/900/850 MHz
* Quad-band support: GSM 850; GSM

BlackBerry Bold 9700 Available Features

* Trackpad navigation
* Bright, hi-resolution screen
* Full QWERTY keyboard
* 3G technology
* Wi-Fi® and Bluetooth® enabled
* 256MB flash memory
* 3.2 MP digital camera with

BlackBerry Bold 9700 video camera
* Multimedia player
* Wireless email
* Organizer
* Browser
* Phone
* SMS/MMS
* MicroSD card reader

* Learn more about the features available on BlackBerry® smartphones

BlackBerry Bold 9700 Size and Weight

Height:
4.29 inches (109 mm)

Width:
2.36 inches (60 mm)

Depth:
0.56 inches (14.1 mm)

Weight:
4.30 ounces / 122 grams
(including battery)
3.17 ounces / 90 grams
(without battery)
Battery & Battery Life

* Battery: 1500 mAh removable/rechargeable lithium-ion battery
* Talk Time: Up to 6 hours (GSM and UMTS)
* Standby Time: Up to 21 days/504 hours (GSM), Up to 17 days/408 hours (UMTS)
* Music Playback Time: Up to 38 hours

BlackBerry Bold 9700 Display

* High resolution 480x360 pixel
color display
* Transmissive TFT LCD
* Supports over 65,000 colors
* 2.44" (diagonally measured)

BlackBerry Bold 9700 Camera & Video Recording

* 3.2 MP Camera
* Auto Focus, Image Stabilization
* Flash
* 2X digital zoom
* Video camera recording:
Normal Mode (480 x 352 pixel),
MMS Mode (176 x 144 pixel)

BlackBerry Bold 9700 Maps GPS

* Includes BlackBerry Maps
* Integrated GPS with A-GPS

Install X Windows In Centos Linux

2009-12-21T17:21:00.000+07:00

CentOs Linux have tool to install linux packet by yumm install. Yum Install wil install CentOs Linux Packet by online. If we already have centOs Linux without X Widows system, we can online install with yum install. I Already do this and runing well. This is simple way, just run command bellow:

# yum groupinstall "X Window System" "GNOME Desktop Environment"

After A Windos System Installed we can start X windows sytem by run command:

# startx

Wait an moment and X Windows will launch.

New Release Wordpress 2.9

2009-12-19T16:47:00.000+07:00

On December 18th, 2009, WordPress Version 2.9, named for Carmen McRae, was released to the public.WordPress development team and community to announce the immediate availability of WordPress version 2.9 “Carmen” named in honor of magical jazz vocalist Carmen McRae (whom we’ve added to our Last.fm WP release station). You can upgrade easily from your Dashboard by going to Tools > Upgrade, or you can download from WordPress.org.

New Feature Wordpress 2.9

1. Global undo/”trash” feature, which means that if you accidentally delete a post or comment you can bring it back from the grave (i.e., the Trash). This also eliminates those annoying “are you sure” messages we used to have on every delete.
2. Built-in image editor allows you to crop, edit, rotate, flip, and scale your images to show them who’s boss. This is the first wave of our many planned media-handling improvements.
3. Batch plugin update and compatibility checking, which means you can update 10 plugins at once, versus having to do multiple clicks for each one, and we’re using the new compatibility data from the plugins directory to give you a better idea of whether your plugins are compatible with new releases of WordPress. This should take the fear and hassle out of upgrading.
4. Easier video embeds that allow you to just paste a URL on its own line and have it magically turn it into the proper embed code, with Oembed support for YouTube, Daily Motion, Blip.tv, Flickr, Hulu, Viddler, Qik, Revision3, Scribd, Google Video, Photobucket, PollDaddy, and WordPress.tv (and more in the next release).

MIMO Wireless Technology

2009-12-17T09:10:00.000+07:00

wiMIMO (Multiple Input Multiple Output) wireless communication is next generation wireless communication networks. MIMO is the use of multiple antennas at both the transmitter and receiver to improve communication performance. It is one of several forms of smart antenna technology. MIMO technology has attracted attention in wireless communications, since it offers significant increases in data throughput and link range without additional bandwidth or transmit power. It achieves this by higher spectral efficiency (more bits per second per hertz of bandwidth) and link reliability or diversity (reduced fading).

Functions of MIMO

MIMO can be sub-divided into three main categories, precoding, spatial multiplexing or SM, and diversity coding.

Precoding is multi-layer beamforming in a narrow sense or all spatial processing at the transmitter in a wide-sense. In (single-layer) beamforming, the same signal is emitted from each of the transmit antennas with appropriate phase (and sometimes gain) weighting such that the signal power is maximized at the receiver input. The benefits of beamforming are to increase the signal gain from constructive combining and to reduce the multipath fading effect. In the absence of scattering, beamforming results in a well defined directional pattern, but in typical cellular conventional beams are not a good analogy. When the receiver has multiple antennas, the transmit beamforming cannot simultaneously maximize the signal level at all of the receive antenna and precoding is used. Note that precoding requires knowledge of the channel state information (CSI) at the transmitter.

Spatial multiplexing requires MIMO antenna configuration. In spatial multiplexing, a high rate signal is split into multiple lower rate streams and each stream is transmitted from a different transmit antenna in the same frequency channel. If these signals arrive at the receiver antenna array with sufficiently different spatial signatures, the receiver can separate these streams, creating parallel channels free. Spatial multiplexing is a very powerful technique for increasing channel capacity at higher Signal to Noise Ratio (SNR). The maximum number of spatial streams is limited by the lesser in the number of antennas at the transmitter or receiver. Spatial multiplexing can be used with or without transmit channel knowledge.

Diversity Coding techniques are used when there is no channel knowledge at the transmitter. In diversity methods a single stream (unlike multiple streams in spatial multiplexing) is transmitted, but the signal is coded using techniques called space-time coding. The signal is emitted from each of the transmit antennas using certain principles of full or near orthogonal coding. Diversity exploits the independent fading in the multiple antenna links to enhance signal diversity. Because there is no channel knowledge, there is no beamforming or array gain from diversity coding.

Spatial multiplexing can also be combined with precoding when the channel is known at the transmitter or combined with diversity coding when decoding reliability is in trade-off.

Applications of MIMO

Spatial multiplexing techniques makes the receivers very complex, and therefore it is typically combined with Orthogonal frequency-division multiplexing (OFDM) or with Orthogonal Frequency Division Multiple Access (OFDMA) modulation, where the problems created by multi-path channel are handled efficiently. The IEEE 802.16e standard incorporates MIMO-OFDMA. The IEEE 802.11n standard, scheduled to be finalized in late 2009, recommends MIMO-OFDM.

MIMO is also planned to be used in Mobile radio telephone standards such as recent 3GPP and 3GPP2 standards. In 3GPP, High-Speed Packet Access plus (HSPA+) and Long Term Evolution (LTE) standards take MIMO into account. Moreover, to fully support cellular environments MIMO research consortia including IST-MASCOT propose to develop advanced MIMO techniques, i.e., multi-user MIMO (MU-MIMO).

Read More For Mimo

High Speed Wireless: Using Wireless N Technology

2009-12-15T12:02:00.000+07:00

Home and business networkers looking to buy wireless local area network (WLAN) gear face an array of choices. Many products conform to the 802.11a, 802.11b, 802.11g, or 802.11n wireless standards collectively known as Wi-Fi technologies. Additionally, Bluetooth and various other non Wi-Fi technologies also exist, each also designed for specific networking applications.Using Wireless N Technology maybe can increase wifi connection speed. Why wireless N can increase wifi speed? This is history of wifi technology.

802.11
In 1997, the Institute of Electrical and Electronics Engineers (IEEE) created the first WLAN standard. They called it 802.11 after the name of the group formed to oversee its development. Unfortunately, 802.11 only supported a maximum network bandwidth of 2 Mbps - too slow for most applications. For this reason, ordinary 802.11 wireless products are no longer manufactured.

802.11b
IEEE expanded on the original 802.11 standard in July 1999, creating the 802.11b specification. 802.11b supports bandwidth up to 11 Mbps, comparable to traditional Ethernet.

802.11b uses the same unregulated radio signaling frequency (2.4 GHz) as the original 802.11 standard. Vendors often prefer using these frequencies to lower their production costs. Being unregulated, 802.11b gear can incur interference from microwave ovens, cordless phones, and other appliances using the same 2.4 GHz range. However, by installing 802.11b gear a reasonable distance from other appliances, interference can easily be avoided.

* Pros of 802.11b - lowest cost; signal range is good and not easily obstructed
* Cons of 802.11b - slowest maximum speed; home appliances may interfere on the unregulated frequency band

802.11a
While 802.11b was in development, IEEE created a second extension to the original 802.11 standard called 802.11a. Because 802.11b gained in popularity much faster than did 802.11a, some folks believe that 802.11a was created after 802.11b. In fact, 802.11a was created at the same time. Due to its higher cost, 802.11a is usually found on business networks whereas 802.11b better serves the home market.

802.11a supports bandwidth up to 54 Mbps and signals in a regulated frequency spectrum around 5 GHz. This higher frequency compared to 802.11b shortens the range of 802.11a networks. The higher frequency also means 802.11a signals have more difficulty penetrating walls and other obstructions.

Because 802.11a and 802.11b utilize different frequencies, the two technologies are incompatible with each other. Some vendors offer hybrid 802.11a/b network gear, but these products merely implement the two standards side by side (each connected devices must use one or the other).

* Pros of 802.11a - fast maximum speed; regulated frequencies prevent signal interference from other devices
* Cons of 802.11a - highest cost; shorter range signal that is more easily obstructed

802.11g
In 2002 and 2003, WLAN products supporting a newer standard called 802.11g emerged on the market. 802.11g attempts to combine the best of both 802.11a and 802.11b. 802.11g supports bandwidth up to 54 Mbps, and it uses the 2.4 Ghz frequency for greater range. 802.11g is backwards compatible with 802.11b, meaning that 802.11g access points will work with 802.11b wireless network adapters and vice versa.

* Pros of 802.11g - fast maximum speed; signal range is good and not easily obstructed
* Cons of 802.11g - costs more than 802.11b; appliances may interfere on the unregulated signal frequency

802.11n
The newest IEEE standard in the Wi-Fi category is 802.11n. It was designed to improve on 802.11g in the amount of bandwidth supported by utilizing multiple wireless signals and antennas (called MIMO technology) instead of one.

Pic Linksys Wireless N Support

When this standard is finalized, 802.11n connections should support data rates of over 100 Mbps. 802.11n also offers somewhat better range over earlier Wi-Fi standards due to its increased signal intensity. 802.11n equipment will be backward compatible with 802.11g gear.

Pic Buffalo Wireless N Support

* Pros of 802.11n - fastest maximum speed and best signal range; more resistant to signal interference from outside sources
* Cons of 802.11n - standard is not yet finalized; costs more than 802.11g; the use of multiple signals may greatly interfere with nearby 802.11b/g based networks.

Source :http://compnetworking.about.com/cs/wireless80211/a/aa80211standard_2.htm

Configuration CakePHP

2009-05-01T15:40:00.000+07:00

After install CakePHP successfully, next step is setup configuration file. Application configuration in CakePHP is found in /app/config/core.php. This file is a collection of Configure class variable definitions and constant definitions that determine how your application behaves. Before we dive into those particular variables, you’ll need to be familiar with Configure, CakePHP’s configuration registry class.

The Configure class is used to manage a set of core CakePHP configuration variables. These variables can be found in app/config/core.php. Below is a description of each variable and how it affects your CakePHP application.

Database Configuration
CakePHP expects database configuration details to be in a file at app/config/database.php. An example database configuration file can be found at app/config/database.php.default. A finished configuration should look something like this.

var $default = array('driver'      => 'mysql',
'persistent'  => false,
'host'        => 'localhost',
'login'       => 'cakephpuser',
'password'    => 'c4k3roxx!',
'database'    => 'my_cakephp_project',
'prefix'      => '');

The $default connection array is used unless another connection is specified by the $useDbConfig property in a model. For example, if my application has an additional legacy database in addition to the default one, I could use it in my models by creating a new $legacy database connection array similar to the $default array, and by setting var $useDbConfig = ‘legacy’; in the appropriate models.

Configure Variable	Description
debug	Changes CakePHP debugging output. 0 = Production mode. No output. 1 = Show errors and warnings. 2 = Show errors, warnings, and SQL. 3 = Show errors, warnings, SQL, and complete controller dump.
App.baseUrl	Un-comment this definition if you don’t plan to use Apache’s mod_rewrite with CakePHP. Don’t forget to remove your .htaccess files too.
Routing.admin	Un-comment this definition if you’d like to take advantage of CakePHP admin routes. Set this variable to the name of the admin route you’d like to use. More on this later.
Cache.disable	When set to true, caching is disabled site-wide.
Cache.check	If set to true, enables view caching. Enabling is still needed in the controllers, but this variable enables the detection of those settings.
Session.save	Tells CakePHP which session storage mechanism to use. php = Use the default PHP session storage. cache = Use the caching engine configured by Cache::config(). Very useful in conjunction with Memcache (in setups with multiple application servers) to store both cached data and sessions. cake = Store session data in /app/tmp database = store session data in a database table. Make sure to set up the table using the SQL file located at /app/config/sql/sessions.sql.
Session.table	The name of the table (not including any prefix) that stores session information.
Session.database	The name of the database that stores session information.
Session.cookie	The name of the cookie used to track sessions.
Session.timeout	Base session timeout in seconds. Actual value depends on Security.level.
Session.start	Automatically starts sessions when set to true.
Session.checkAgent	When set to false, CakePHP sessions will not check to ensure the user agent does not change between requests.
Security.level	The level of CakePHP security. The session timeout time defined in 'Session.timeout' is multiplied according to the settings here. Valid values: 'high' = x 10 'medium' = x 100 'low' = x 300 'high' and 'medium' also enable session.referer_check CakePHP session IDs are also regenerated between requests if 'Security.level' is set to 'high'.
Security.salt	A random string used in security hashing.
Acl.classname, Acl.database	Constants used for CakePHP’s Access Control List functionality. See the Access Control Lists chapter for more information.

Cache configuration is also found in core.php — We’ll be covering that later on, so stay tuned.

Use Image As Link In CakePHP

2009-04-29T08:59:00.000+07:00

We make link in CakePHP use $html->link helper. If we have users table as follow :

Id Username email Firstname Lastname password 1 User1 User1@yahoo.com

******** 2 User2 User2@yahoo.com

********

CREATE `users` (
`id` int(11) NOT NULL,
`username` varchar(40) NOT NULL,
`password` varchar(40) NOT NULL,
`email` varchar(255) NOT NULL,
`first_name` varchar(40) NOT NULL,
`last_name` varchar(40) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `email` (`email`),
UNIQUE KEY `username` (`username`),
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

If we have created model and controller before, we usually create view script to display content of the table like this :

link(__('Detail', true), array('action'=>'detail', $User['User']['id'])); ?>

Result of the view script as follow :

username Email Password Detail User1 User2@yahoo.comThis e-mail address is being protected from spam bots, you need JavaScript enabled to view it *********** Detail User2 User2@yahoo.comThis e-mail address is being protected from spam bots, you need JavaScript enabled to view it ***********

Detail Link created to display all content of table. We can change Detail with image use $html->image helper . We change Detail with image user.jpg. User image must be saved in webroot/img before.

link($html->image('user.jpg'), array('action' => 'list',$User['User']['id']), array('escape' => false));?>

We want Result of script like this :

username Email Password User1 User1@yahoo.comThis e-mail address is being protected from spam bots, you need JavaScript enabled to view it *********** User2 User2@yahoo.comThis e-mail address is being protected from spam bots, you need JavaScript enabled to view it ***********
Don’t forget to add escape => false if not image display ignored. Please try.

Reference :
1. http://book.cakephp.org
2.http://www.cakephp.co.uk/images_and_links_cakephp_html_helper.html

Link Quality Parameter Motorola Canopy

2009-04-27T16:06:00.000+07:00

Motorola’s Fixed broadband solutions bring fast availability and cost-effective, reliable connectivity. These solutions offer flexible options to improve coverage to meet each subscriber’s demands. Serving a broad range of licensed and unlicensed spectrums (with solutions at 2.3 GHz through the 5 GHz frequencies). After install and setup Motorola Canopy we must test result of link quality. Not only can ping and reply, but we must see other parameter. RSSI, Jitter and link eficiency must give us reason to finish instalation.

RSSI, RSSI must greater than 700
Jitter value between 0 and 4 in a 10-Mbps BH in Release 4.0 and later releases, between 0 and 9 in a 20-Mbps BH, or between 5 and 9 in any earlier release.
Uplink efficiency greater than 90% and downlink efficiency greater than 90%.
All of parameter can access from web base management.

Not Enough RSSI And Jitter

Linux Partitioning With Fdisk

2009-04-27T09:32:00.000+07:00

We Can Create Disk Partition in Linux with Fdisk command. We must root privilege to run fdisk comand.Linux allows only 4 primary partitions .You can have a much larger number of logical partitions by sub-dividing one of the primary partitions. Only one of the primary partitions can be sub-divided.

The basic fdisk commands you need are:

l list the partition table
n create a new partition
d delete a partition
q quit without saving changes
w write the new partition table and exit

Changes you make to the partition table do not take effect until you issue the write (w) command. Here is a sample partition table:

Example :

root@server:/# fdisk -l

Disk /dev/hda: 6448 MB, 6448619520 bytes
255 heads, 63 sectors/track, 784 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hda1 * 1 752 6040408+ 83 Linux
/dev/hda2 753 784 257040 82 Linux swap

Disk /dev/hdc: 15.0 GB, 15000330240 bytes
255 heads, 63 sectors/track, 1823 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hdc1 * 1 1275 10241406 7 HPFS/NTFS
/dev/hdc2 1276 1823 4401810 f W95 Ext'd (LBA)
/dev/hdc5 1276 1823 4401778+ b W95 FAT32

As you can see fdisk -l give information of disk partition on my linux. There are two disk /dev/hda and /dev/hdb. First disk have 6448 MB disk volume and 2 partition Linux and Linux swap. Second disk /dev/hdc have 15.0 GB disk volume and 3 partition.

Relationship Between Database Tables CakePHP

2009-04-25T11:35:00.000+07:00

Database relationship is hard to maintain even for a mid-sized PHP/MySQL application, particularly, when multiple levels of relationships are involved because complicated SQL queries are needed. CakePHP offers a simple yet powerful feature called ‘object relational mapping’ or ORM to handle database relationships with ease.In CakePHP, relations between the database tables are defined through association—a way to represent the database table relationship inside CakePHP. Once the associations are defined in models according to the table relationships, we are ready to use its wonderful functionalities. Using CakePHP’s ORM, we can save, retrieve, and delete related data into and from different database tables with simplicity, in a better way—no need to write complex SQL queries with multiple JOINs anymore!
Working with Simple Associations using CakePHP

* How to figure out association types from database table relations
* How to define different types of associations in CakePHP models
* How to utilize the association for fetching related model data
* How to relate associated data while saving
There are basically 3 types of relationship that can take place between database tables:

* one-to-one
* one-to-many
* many-to-many

The first two of them are simple as they don’t require any additional table to relate the tables in relationship. In this article, we will first see how to define associations in models for one-to-one and one-to-many relations. Then we will look at how to retrieve and delete related data from, and save data into, database tables using model associations for these simple associations.
Defining One-To-Many Relationship in Models

To see how to define a one-to-many relationship in models, we will think of a situation where we need to store information about some authors and their books and the relation between authors and books is one-to-many. This means an author can have multiple books but a book belongs to only one author (which is rather absurd, as in real life scenario a book can also have multiple authors). We are now going to define associations in models for this one-to-many relation, so that our models recognize their relations and can deal with them accordingly.
Time for Action: Defining One-To-Many Relation

1. Create a new database and put a fresh copy of CakePHP inside the web root. Name the database whatever you like but rename the cake folder to relationship. Configure the database in the new Cake installation.
2. Execute the following SQL statements in the database to create a table named authors,
3. Create a books table in our database by executing the following SQL commands:
4. Create the Author model using the following code (/app/models/authors.php):
5. Use the following code to create the Book model (/app/models/books.php):
6. Create a controller for the Author model with the following code: (/app/controllers/authors_controller.php):
7. Use the following code to create a controller for the Book model (/app/controllers/books_controller.php):We have created two tables: authors and books for storing author and book information.

A foreign-key named author_id is added to the books table to establish the one-to-many relation between authors and books. Through this foreign-key, an author is related to multiple books, as well as, a book is related to one single author.

By Cake convention, the name of a foreign-key should be underscored, singular name of target model, suffixed with _id.

Once the database tables are created and relations are established between them, we can define associations in models. In both of the model classes, Author and Book, we defined associations to represent the one-to-many relationship between the corresponding two tables. CakePHP provides two types of association: hasMany and belongsTo to define one-to-many relations in models.

These associations are very appropriately named:
8. As an author ‘has many’ books, Author model should have hasMany association to represent its relation with the Book model.
9. As a book ‘belongs to’ one author, Book model should have belongsTo association to denote its relation with the Author model.

In the Author model, an association attribute $hasMany is defined with the value Book to inform the model that every author can be related to many books. We also added a $belongsTo attribute in the Book model and set its value to Author to let the Book model know that every book is related to only one author.

After defining the associations, two controllers were created for both of these models with scaffolding to see how the associations are working.

Begining CakePHP

2009-04-22T09:02:00.000+07:00

What Is CakePHP? And Why CakePHP. Ok, Lets Begin. CakePHP is a rapid development framework for PHP that provides an extensible architecture for developing, maintaining, and deploying applications. Using commonly known design patterns like MVC and ORM within the convention over configuration paradigm, CakePHP reduces development costs and helps developers write less code. We Can download CakePHP From http://cakephp.org/.

MVC Design
CakePHP Follow The MVC (Model-View- Controller) Design pattern. MVC Pattern separate aplication in three part, Model, View and controller.

Model represents the application data
View renders a presentation of model data
Controller handles and routes requests made by the client

Installing CakePHP
Requirements

HTTP Server. Apache with mod_rewrite is preferred, but by no means required.
PHP 4.3.2 or greater. Yes, CakePHP works great on PHP 4 and 5.

CakePHP supports a variety of database storage engines:

MySQL (4 or greater)
PostgreSQL
Firebird DB2
Microsoft SQL Server
Oracle
SQLite
ODBC
ADOdb

Installing CakePHP
akePHP is fast and easy to install. The minimum requirements are a webserver and a copy of Cake, that's it! While this manual focuses primarily on setting up with Apache (because it's the most common), you can configure Cake to run on a variety of web servers such as LightHTTPD or Microsoft IIS.
Installation preparation consists of the following steps:

Downloading a copy of CakePHP From http://cakephp.org
Extract source file and copy into your web root directory.
Configuring your web server to handle php if necessary and run Mod Rwrite
Checking file permissions

After Instalation CakePHP structure must like this:

/var/www/html
- /cake_1_2
  - /app
  - /cake
  - /vendors
  - /.htaccess
  - /index.php
  - /README

And we can test CakePHP From browser, example http://localhost/cake. If you can see page with css like Fig 1 CakePHP running well .

Fig 1. CakePHP Sucessfully Installed

but if you can't see page witht css loaded, you must check again your config.

Fig 2. Cake Unsuccesfully Installed

After instalation we must check permission /tmp directory.CakePHP uses the /app/tmp directory for a number of different operations. Model descriptions, cached views, and session information are just a few examples.As such, make sure the /app/tmp directory in your cake installation is writable by the web server user.

Linux File System

2008-12-23T12:20:00.000+07:00

If you beginner in Linux environment, you must understand abaout Linux File system First.In this note we will work in linux command line not in GUI(graphical user interface).Like that legacy operating system, the files on a Linux system are arranged in what is called a hierarchical directory structure. This means that they are organized in a tree-like pattern of directories (called folders in other systems), which may contain files and other directories. The first directory in the file system is called the root directory. The root directory contains files and subdirectories, which contain more files and subdirectories and so on and so on.

One important difference between the legacy operating system and Unix/Linux is that Linux does not employ the concept of drive letters. While drive letters split the file system into a series of different trees (one for each drive), Linux always has a single tree. Different storage devices may contain different branches of the tree, but there is always a single tree.
pwd

Since a command line interface cannot provide graphic pictures of the file system structure, it must have a different way of representing it. Think of the file system tree as a maze, and you are standing in it. At any given moment, you stand in a single directory. Inside that directory, you can see its files and the pathway to its parent directory and the pathways to the subdirectories of the directory in which you are standing.

The directory you are standing in is called the working directory. To find the name of the working directory, use the pwd command.

[me@linuxbox me]$ pwd
/home/me

When you first log on to a Linux system, the working directory is set to your home directory. This is where you put your files. On most systems, your home directory will be called /home/your_user_name, but it can be anything according to the whims of the system administrator.

To list the files in the working directory, use the ls command.

[me@linuxbox me]$ ls

Desktop Xrootenv.0 linuxcmd
GNUstep bin nedit.rpm
GUILG00.GZ hitni123.jpg nsmail

I will come back to ls in the next lesson. There are a lot of fun things you can do with it, but I have to talk about pathnames and directories a bit first.
cd

To change your working directory (where you are standing in the maze) you use the cd command. To do this, type cd followed by the pathname of the desired working directory. A pathname is the route you take along the branches of the tree to get to the directory you want. Pathnames can be specified in one of two different ways; absolute pathnames or relative pathnames. Let's deal with absolute pathnames first.

An absolute pathname begins with the root directory and follows the tree branch by branch until the path to the desired directory or file is completed. For example, there is a directory on your system in which programs are installed for the X window system. The pathname of the directory is /usr/X11R6/bin. This means from the root directory (represented by the leading slash in the pathname) there is a directory called "usr" which contains a directory called "X11R6" which contains a directory called "bin".

Let's try this out:

[me@linuxbox me]$ cd /usr/X11R6/bin

[me@linuxbox bin]$ pwd
/usr/X11R6/bin

[me@linuxbox bin]$ ls

Animate import xfwp
AnotherLevel lbxproxy xg3
Audio listres xgal
Auto lndir xgammon
Banner makedepend xgc
Cascade makeg xgetfile
Clean mergelib xgopher
Form mkdirhier xhexagons
Ident mkfontdir xhost
Pager mkxauth xieperf
Pager_noxpm mogrify xinit
RunWM montage xiterm
RunWM.AfterStep mtv xjewel
RunWM.Fvwm95 mtvp xkbbell
RunWM.MWM nxterm xkbcomp

and many more...

Now we can see that we have changed the current working directory to /usr/X11R6/bin and that it is full of files. Notice how your prompt has changed? As a convenience, it is usually set up to display the name of the working directory.

Where an absolute pathname starts from the root directory and leads to its destination, a relative pathname starts from the working directory. To do this, it uses a couple of special symbols to represent relative positions in the file system tree. These special symbols are "." (dot) and ".." (dot dot).

The "." symbol refers to the working directory and the ".." symbol refers to the working directory's parent directory. Here is how it works. Let's change the working directory to /usr/X11R6/bin again:

[me@linuxbox me]$ cd /usr/X11R6/bin
[me@linuxbox bin]$ pwd
/usr/X11R6/bin

O.K., now let's say that we wanted to change the working directory to the parent of /usr/X11R6/bin which is /usr/X11R6. We could do that two different ways. First, with an absolute pathname:

[me@linuxbox bin]$ cd /usr/X11R6
[me@linuxbox X11R6]$ pwd
/usr/X11R6

Or, with a relative pathname:

[me@linuxbox bin]$ cd ..
[me@linuxbox X11R6]$ pwd
/usr/X11R6

Two different methods with identical results. Which one should you use? The one that requires less typing!

Likewise, we can change the working directory from /usr/X11R6 to /usr/X11R6/bin in two different ways. First using an absolute pathname:

[me@linuxbox X11R6]$ cd /usr/X11R6/bin
[me@linuxbox bin]$ pwd
/usr/X11R6/bin

Or, with a relative pathname:

[me@linuxbox X11R6]$ cd ./bin
[me@linuxbox bin]$ pwd
/usr/X11R6/bin

Now, there is something important that I must point out here. In almost all cases, you can omit the "./". It is implied. Typing:

[me@linuxbox X11R6]$ cd bin

would do the same thing. In general, if you do not specify a pathname to something, the working directory will be assumed. There is one important exception to this, but we won't get to that for a while.
A couple of shortcuts

If you type cd followed by nothing, cd will change the working directory to your home directory.

A related shortcut is to type cd ~user_name. In this case, cd will change the working directory to the home directory of the specified user.
Important facts about file names

1. File names that begin with a period character are hidden. This only means that ls will not list them unless you say ls -a. When your account was created, several hidden files were placed in your home directory to configure things for your account. Later on we will take a closer look at some of these files to see how you can customize your environment. In addition, some applications will place their configuration and settings files in your home directory as hidden files.

2. File names in Linux, like Unix, are case sensitive. The file names "File1" and "file1" refer to different files.

3. Linux has no concept of a "file extension" like legacy operating systems. You may name files any way you like. The contents/purpose of a file is determined by other means.

4. While Linux supports long file names which may contain embedded spaces and punctuation characters, limit the punctuation characters to period, dash, and underscore. Most importantly, do not embed spaces in file names. If you want to represent spaces between words in a file name, use underscore characters. You will thank yourself later.

Reference : http://gd.tuwien.ac.at/linuxcommand.org