Bharat Sanchar Nigam Limited (BSNL) has started 3G (third generation) telecom services in many metros across the country.On completion of competitive bidding this year telecom companies in private sector will be on air to provide 3G telecom services.

What’s 3G

Here, next generation telecom services are coordinated in very new platform. Existing multimedia facilities are getting upgraded and also the internet access will increase considerably. We can call it as Mobile Broad Band Internet. Advantage of this speed is on easy and continuous video broadcasting.

Using 3G video call is possible by which we can make calls by seeing the live image of the person on the other end. All we need is 3G mobile handsets on both ends. We can broadcast live wedding ceremonies and conferences to the persons who could not attend the same.

How it can?

Buy a 3G mobile handset and also a BSNL 3G service. Instead of ordinary SIM, here we use USIM (Universal Subscriber Identification Module). An USIM of 256 Kilo Bytes memory now costs only 60 rupees. 3G service is available in selected areas and soon it will be available whole across the country.

Mobile Television

One of the great advantages of 3G is mobile Television. If subscribe to mobile TV service, we can see many TV channels on the cell phone when we are under the coverage area. We can see Youtube videos without any fee.

To avail this service sms MY3GTV to 55447 (This format and number may differ according to different states).Soon an URL wick get. Click on it and download a 662 KB application. Store it in your phone memory or in memory chip. Different tariff is available and preview is free.

Other aspects of 3G

We can share digital photos

Easy download of music files and movies

Can play games in real time for more than one persons in different places(Real Time Multiplier Gaming)

Sharing of cinemas and documentaries with viewers is possible.

Live telecast of meeting, functions etc. is possible

3G services are available as prepaid and postpaid connections. Tariffs and application forms are available in BSNL websites.

Nokia N Series phones are favourate of many people. Lets today know somethings about the Nokia N86 mobile phone which has 8 megapixel camera. Nokia keeps launching different N Series phones with new features. Nokia N86 is some what a phone that many people will like due to its camera and other features. Nokia N86 is a slider format mobile phone and its exterior is black in colour.

Main features:

1. 8 megapixel camera with dua-LED Flash and 20x digital zoom.
2. Operating System- Symbian OS 9.3
3. Video recording upto 30frames per second.
4. 2.6' Amoled 16 million colour screen.
5. Wifi with UPNP technology
6. Digital compass which helps in knowing directions
7. Good audio quality
8. Good Fm radio with RDS
9. 8 GB internal memory
10. Quad band GSM support and 3G with HSDPA 3.6 Mbps support

Disadvantages:

1. Image processing is not that good.
2. Poor display in sunlight.
3. Its doesn't have xenon flash.
4. No office document editing

This is my first review about a phone i will be coming up with review of other phones soon.

Dividing Computer Duties and Resources

As you plan your workgroup network, you should think about which computers will perform certain tasks in the network. Some tasks include file storage, Internet access, backing up data files, and resource usage. Use the best computer for each job so that the entire network will run efficiently and economically. The first thing you should consider is which computers will be on and available most of the time. Before anyone can use a computer and its resources, of course, that computer must be turned on. This should help you decide computer and resource placement.

After all, you may not want to run upstairs to turn on a computer every time you want to use its CD-ROM drive or printer. When you’re finished, you have to run back upstairs to turn off the computer again. Other items to consider include computer memory, disk space, and specialty hardware for use with resources. In addition to using computers that operate efficiently, you may need to add hardware to computers that will perform special network tasks

Assigning computer duties

Depending on the computers you plan to connect to the network, you’ll want to decide which computers perform certain tasks on the network. You may want each computer to store its own files, for example, or you may have one exceptionally large hard drive that can hold everyone’s extra files.

Making Basic Network Choices

A  home network with multiple options for file storage and backups. The computer with the Zip drive might be used for saving graphic files, for example. The computer with the tape drive can back up everyone’s data files. And the computer with the largecapacity hard disk can contain folders in which each user can store his or her files, as well as folders for storing applications, Internet files, and other shared files. First, determine the duties you expect from your computers. A computer can store files— word processing, database, graphics, application, data, and other files—for any or all of the users on the network.

A computer also can store backup files for any or all of the computers on the network. The difference between normal file storage and backup file storage not only determines the amount of hard disk space used but also influences network traffic. If you store your data files on your spouse’s computer, for example, you will have to access your spouse’s computer when you need the files. Each time you open or save a file, you create network traffic and use your spoue’s computer resources, even if it is for only a moment or two. In addition, your spouse’s computer will need to be turned on whenever you need files. On the other hand, when you back up your files to your spouse’s computer, you probably will not need to access the files at all. Generally, you need to access a backup only if something happens to your original files—corruption, disk failure, and the like. The process of backing up, however, takes longer than just saving one file to another computer.

Disk space

You need to consider each computer’s hard disk space before deciding which computer to use for file storage and backups. A computer with only 2 to 5GB of disk space cannot reasonably store many graphics files or music files, for example. However, a 2 to 5GB drive could comfortably store word processing and spreadsheet documents, in addition to several applications. Most new computers come with much larger hard drives now. It’s not unusual to see drives that offer 40, 60, 80, or more gigabytes of space. Depending on your computer’s hard disk space, you might want to divide the file storage duties. You could back up all files to one computer, or back up your files to your spouse’s machine, your spouse’s files to your son’s machine, and your son’s files to your machine. Plan ahead, depending on the hard disk sizes of your computers.

Computer power and memory

Consider, too, the power and memory of each computer on the network. A very slow machine, such as a 300 MHz, might not be the appropriate choice for containing files that need to be accessed often. Such a computer slows down the rest of the network when accessed frequently. Similarly, computers with less memory react more slowly than those with more memory. Reserve the Windows 98 computer with only 64MB of RAM and a Pentium II processor for network jobs that aren’t processor- and memory-intensive. Use the Windows XP Professional computer with 256MB of RAM and a Pentium IV processor for backing up files quickly and effectively.

Dividing resources

The members of a workgroup network act as both the client and the server. As a server, each computer shares its files and resources; as the client, each computer partakes of the others’ resources. You must consider the resources you’ll be using on the network. You can assign resources—such as printers, scanners, storage devices, and so on—to certain computers in your network so that everyone has access but no one computer is burdened by the load. The laser printer is located on the first floor of the house because there are two computers downstairs and only one upstairs. The scanner, on the other hand, is upstairs because the teenager uses it the most and that computer has the appropriate hardware to run the scanner. The other two computers are on the network, however, so they can access scanned images anytime from the teenager’s computer. For each resource you add to the network, you must determine which computer best suits that resource’s requirements.

Consider the requirements for scanners, printers, CD-ROM drives, modems, and others. Remember, too, that when you share a resource, the computer attached to that resource will take a performance hit whenever the resource is being used. When you install a scanner on a computer, you also need to install an adapter card and scanner software. That means the computer on which you install the hardware must have a free slot for the adapter card and room enough for the scanning program. Scanned images create large files, so you’ll need plenty of storage space. Additionally, scanning requires substantial memory and processor speed. The computer to which you install a modem and with which you connect to the Internet also must have considerable memory and processor speed for quick and easy access. The software for sharing an Internet account has special requirements; alternatively, you can use a piece of hardware (called a router) to share Internet connections.

Temporary Internet files and cookies take up a lot of disk space as well. Cookies are identifiers saved on your hard disk during your visits to various Web pages. Software on the Web sends the cookie to collect information—such as your name, e-mail address, site password, and so on—and then logs that information on your hard disk. The next time you visit that particular site, software from the site recalls the cookie so that it knows who you are. Most cookies are harmless. If you use a Web connection on your small-business network, you should certainly employ some sort of security. It’s common for crackers to break into local networks from the Internet and pilfer business records, confidential files, payroll information, and more. The cracker could be your competition, a disgruntled employee, or even a kid experimenting with applications built for cracking systems.

Consider using software such as a firewall or a proxy server.  You may prefer to back up files or store files on a CD drive, Zip drive, or other mass storage device. When deciding whether to attach the storage device to a computer, check compatibility as well as requirements. Tape drives are often difficult to install on some computers, for example. CD drives are easy to use, inexpensive, and popular for storing and backing up files.

Understanding the Limits of Workgroup Networking

Workgroup networks offer many advantages for the home network. You can share resources and files with other users, read each other’s schedules, learn about e-mail, and share an Internet access account, for example. You also can experience some real problems with a workgroup network.Workgroup networking can place a strain on individual computers and on resources, especially if the requests for use of the resource or network traffic is high. Also, workgroup networking offers little security for your files and data, and it limits the number of people you can attach to the network. Understanding the limits of a workgroup network will help you determine some solutions to the problems.

Considering performance

Your network performance depends on many issues. You should make sure that you have sufficient computer power, and you need to consider the networking equipment you’ll use. The most positive aspect of performance is that you can always upgrade your equipment. In home networking, you can begin building your network with even the most minimal computer and networking equipment. After you use the network for a while, you can decide if the performance is adequate for your needs. For this plan to work, however, you need to be sure your initial purchases are upgradable. For example, if you purchase a computer, check to see if you can add additional hard disks, if you have plenty of slots for adapter cards, and if the memory is easy to find and upgradable. With your network hardware purchases, you also should plan ahead. When you buy network cards, buy cards that fit several different cabling types and speeds, if possible. When you buy cabling, don’t limit your upgrade choices.

Thinking about security issues

You probably won’t need to worry too much about security issues in your home network. You most likely trust your spouse and your children with any information on the network. There are, however, a few issues to consider.

• First, accidents happen. Someone could access your hard disk accidentally and delete a few files, a folder or two, or your entire hard disk’s contents. This kind of potential problem is a security issue.

• Second, a child could always bring home a friend who fancies him- or herself a hacker. It’s not too unlikely that such a kid could access and then alter, delete, or just read your private files.

• Third, if you have an Internet connection, the possibility always exists that someone could crack your system and compromise your data. Most operating systems provide some safety measures that can protect your files from access by others on the network. You can choose which files to share and which remain private.

Also, applications are available that enable you to control other computers on the network so that files, settings, and configurations are not accessible by anyone without a password. Finally, you can add software to your network to help protect it from intruders via the Internet.

Limiting the number of users

As you know by now, a workgroup network limits the number of users you can add to your network. Ten users are the most you can connect before you start to see a major deficit in performance. Even if you have fewer than ten users, you can experience performance problems. Three or four users who use network resources heavily can slow down performance and hinder everyone’s computer and network operation. If you have any idea at all that you’ll be adding more users or heavy-usage users to your network, consider using high-performance networking equipment, such as Ethernet or Fast Ethernet. You also should consider using a client/server network. Ethernet and Fast Ethernet are networking technologies that provide speed and superior performance.

A client/server network may better serve your needs by using a dedicated server and specialized software . Troubleshooting a workgroup network is fairly easy. First, a workgroup network has only a few users and computers to check when something goes wrong. Second, after the initial setup, only a few things can go wrong to make the network stop working. As far as administering a workgroup network is concerned, your job will be easy.

Making Basic Network Choices

Solving workgroup networking problems depends on the hardware you use to build your network. Unless someone changed the configurations, the problem isn’t likely to be in the networking software. When a connection or access problem occurs, you should check all connections to the network: A cable or network card could be the problem. Replacing these networking items is quick and easy.

Understanding Internet Access

Most homes with PCs have at least one Internet account. Kids might use the account to play games, to e-mail friends, and to gather information for school. Mom and Dad might use the Internet to e-mail family and friends, look for prices on golf carts and digital cameras, read the news, check the weather, make stock investments, bid on auctions, and more. Perhaps one or more family members want to create a Web page or subscribe to e-zines (electronic magazines). This site advertises entertainment links to music, games, and movie clips. You can even design your own Web pages to put on the Web. Add to home and personal use the fact that many people work in their homes instead of in a traditional office. People working in home offices need the Internet for a variety of reasons—checking competitors, advertising with their own Web pages, e-mailing customers, sending and receiving work-related files, and perhaps even running an e-commerce site. Internet access is easier and cheaper than it’s been in years past. Most computers come with built-in modems; or you can easily add an external modem for less than $60. There are also DSL and cable modems available in most areas of the country. All Windows versions have built-in Web browsers and e-mail programs. Most Macs also have built-in browsers and e-mail. Local and national ISPs offer deals to attract more home users.

Exploring advantages and disadvantages of Internet access

The Internet affords the possibility for anyone with a connection to access data from any other Internet connection in the world for a fraction of the cost of traditional data collection methods. Internet access and use are growing at an incredible rate. Anything so nearly infinite certainly has many disadvantages as well as advantages.

Advantages

One of the biggest advantages of Internet connections, as previously mentioned, is the availability of the technology to nearly everyone. Home users now can afford to attach to the Internet by using a standard PC that comes with a modem and the Windows operating system. The only other thing that is needed is the Internet connection. If you already have cable TV, you can add a cable modem with a faster Internet connection than dial-up for around $45 a month. If you already have a network in your home, you have the built-in equipment for sharing an Internet connection. All you need to buy is an inexpensive piece of software or hardware that enables you to share one connection and one Internet account. You don’t have to purchase additional cabling, modems, or other equipment to attach everyone in the home to the Internet.

Following are some of the advantages to using the Internet for the home user:

• Using the Internet promotes cooperative learning. Your kids can e-mail and share files with universities, libraries, research groups, and others. Users send links to useful Web pages to each other and sign up for informational newsletters and papers.

• Internet users can read about, study, and e-mail people from all over the world to share information and opinions. The Internet also increases access to experts; you can locate authors, scientists, doctors, and others easily through their Web pages or e-mail.

• The Internet access increases motivation. The Internet encourages exploration with a wealth of video, music, animations, and more.

Disadvantages

Naturally, having Internet access in your home also has disadvantages. Many people worry about the type of Web sites and information children access when they are not monitored. Sex, violence, and depraved individuals run rampant over the Internet community. Also at risk is the security of your home. Depending on the information you give out on the Internet, unstable or unscrupulous intruders can invade your home through the Internet or even in person. It’s a scary world, and you might be inviting it into your living room every time you access the Internet.

Other disadvantages include the following:

• The Internet wastes a lot of time. Surfing the Web, joining chat rooms, e-mailing list after list of people and groups—they all take time. Whether it’s a child or an adult who is accessing the Internet, time and exposure should be reasonable and often limited.

• The expense of attaching to the Internet can increase as you discover you need more power, multimedia equipment, and other technologies that enhance the Internet experience. Upgrading hardware and software for Internet use can become addictive.

• Depending on your e-mail and Web access for business or personal use is a risky business. ISP connections and services are always subject to failures; you must make sure that you have an alternative when connections break down and services fail.

• Viruses, worms, and Trojan horses attack almost constantly over the Web and through e-mail. Your computer, data, and even networked computers can be at risk from these pests.

Looking at Internet services

If you’ve ever surfed the Net, you know there’s a world of products and services at your fingertips. You also know that you can find information on just about anything, if you know where to look. After you locate the information, you can share it in many ways over the Net. What’s available You can find just about any type of information you want on the Internet. Not only can you find the popular sales and service Web sites, but also you can take advantage of years of research, studies, reports, and surveys. Following are a few of the things you can explore over the Internet:

Find out information about society and culture. Learn about life in foreign countries or in the United States. Study geography, religion, politics, and the people of present cultures or past ones. Examine archaeology, economics, and languages. Learn about biology, astronomy, and other sciences.

• Visit libraries all over the world. Find definitions and dictionaries, quotes, and anthologies. Study the biographies of famous and infamous people who are living today or who are a part of history.

• Read the news, check the sports, and keep an eye on the weather. Learn where the next war will break out and who is testing nuclear weapons in the world. Find out what your governor or state legislature is doing right now.

• Read famous works of literature, view prominent artwork, listen to a symphony. See the latest photography exhibit in Washington, DC, or visit a museum in Kansas.

• Research the latest movies, as well as movies of the past. Play games, read jokes, and connect with others interested in the same hobbies as you.

• Learn about the newest advances in medicine. Read about the medications you’re taking. Find out how to keep fit and eat well. Get government forms, tax information, grant applications, stamps, and information about city, county, state, federal, and international government.

• Find a job. Post your resume. Inquire about openings all over the country and the world. You can register your Web page with various search engines so that anyone searching for a computer book author, for example, can find your resume easily. The Internet has something for everyone, no matter what your question or interest.

Acquiring the information

In addition to supplying enormous amounts of information, the Internet enables you to transfer the information in various ways. In addition to printing data so that you can read it at your own pace, you can transfer the information electronically.

E-mail

You can send the information you find to another user via e-mail. Attach a file or a link so that you can share any Web site with someone else. Discuss topics, pool resources, and share ideas—all with the click of a mouse. You can send messages to friends and family all over the world with just the click of the mouse.

Chat programs

You also can exchange information over the Internet by using chat programs. Whereas e-mail sometimes must wait until the recipient receives and responds to your message, chat programs connect two or more people online at the same time.

File transfer

Transferring files over the Internet is a quick and easy method of acquiring updates, applications, documents, and other files. You can purchase and download a program, such as a game, a piece of shareware, accounting packages, utilities, and network management software. Many vendors supply free demos of their applications so that you can try it before you buy it. You also can download updated drivers and software for your computer or network. In addition to downloading files from the Internet, you can upload files. Many companies use a special site for their remote employees to send files. You might upload a file to a technical support company, for example, or reports to universities, or documents to friends.

File transfers over the Internet are faster and cheaper than transporting a floppy disk or using snail mail to send files. Conferences and meetings Current technology enables people to hold meetings with colleagues and business associates. NetMeeting, a Windows application, is but one of these programs. Although conferencing software is similar to chat rooms, it also offers features that chat programs do not Some business meeting software, for example, enables the participants to engage in phone conversations at the same time; sometimes videoconferencing is also built in.

Whiteboards are often used to take notes and organize ideas during a meeting; everyone can see the information on the whiteboard, add to it, and modify it. Although conference and meeting software generally is used for business contacts, you easily could use it on your home network too.