Feed on Posts or Comments 28 August 2008

Monthly ArchiveMarch 2008



Dial up Admin on 31 Mar 2008

Broadband and Internet 101

Internet is the World Wide Web. Broadband is the medium that carries it. Internet is the international computer network linking together thousands of individual networks. Broadband is the transmitter of these signals.

The most popular features of the Internet include electronic mail (of course you know e-mail), discussion groups (called newsgroups or bulletin boards, where users can post messages and look for responses on a system called Usenet). There is also the online conversations or chats, adventure and role-playing games and information retrieval You can also find electronic commerce (e-commerce) in the Net where you can buy and sell stuff at the click of a button.

On the other hand, broadband is the high-speed transmission. It is used to refer to Internet access which uses cable modems or DSL (Digital Subscriber Line). Broadband DSL connections are faster compared to dial-up connections.

Dial-up connections utilize phone lines to connect to the Internet while broadband uses cables.

High-speed transmission is commonly used to refer to Internet access via cable modems or DSL, which is faster than dial-up. For years, “broadband” has referred to a higher-speed connection, but the actual speed threshold has varied.

Along with digital subscriber line technology, cable modems ushered in the age of broadband Internet access in developed countries. Before DSL and cable modems, Internet access involved slow dial-up access over a public switched telephone network.

Users in a neighborhood share the available bandwidth provided by a single cable line. Therefore, connection speed can vary depending on how many people are using the service at the same time.

While T1 (1.5 Mbps) has been widely used as the threshold, others have used T3 (45 Mbps) for broadband. For example, after the turn of the century, South Korea leapfrogged the U.S. in Internet access, offering DSL up to 50 Mbps and calling their 1.5 Mbps service “light.”

Mbps is an abbreviation for megabits per second. It is the data transfer speeds as measured in megabits. This unit is mostly used in networking technologies such as broadband.

The World Wide Web (WWW) is the greatest force to the popularization of the Internet. It is a hypertext system (a computer based retrieval system) which makes browsing the Internet both fast and intuitive.

The information stored in the computer networks connected to the Internet forms a huge cyber library. But the enormous quantity of data and information in these interconnected computers makes it difficult to retrieve the information.

This is where broadband comes in because with the use of these cables, the information available in the Internet can be retrieved really fast and without hassles.

The broadband medium can carry signals from different network carriers. This is done through fiber-optic cable. Fiber-optic cable is a thin glass strand designed for transmission. It is capable of transmitting trillions of bits per second

Broadband technology can support a wide range of frequencies. Broadband in general refers to data transmission where multiple pieces of data are sent simultaneously to increase the effective rate of transmission. In network engineering this term is used for methods where two or more signals share a medium.

Various forms of DSL service are broadband in the sense that digital information is sent over one channel and voice over another channel sharing a single pair of wires.

James Monahan is the owner and senior editor of
BroadbandBase.com

VoIP Admin on 30 Mar 2008

Beginners Guide on Voice over Internet Protocol (VoIP)

Nowadays, VoIP became one of the hottest technologies following up on the explosion of high speed Internet access. PC-to-PC calls, ATA phones, IP phones the existence of VoIP had changed how people think about long distance calling plan. As predicted by some of those experts, VoIP might be the technology that kills off the traditional telephones.

What is VoIP?

If you never heard of VoIP, be equipped for a radical change on current telephony systems and long distance calling plans.

Voice over Internet Protocol, or in short, VoIP, is a simple method that takes ordinary analog audio signals and transform it into digital form and traverse in distance through the Internet. Several ways are used for VoIP calls: Analog Telephone Adaptors (ATA), IP phones, and PC-to-PC calls are some of the common ones. While ATA and IP phones will cost you a certain amount on the initial setup and monthly costs; PC-to-PC calls are absolutely free for any distance calls.

The impact of VoIP technology is huge. With VoIP, you can simply enjoy much cheaper phone calls by utilizing your existing PC set up and data networks. For those of you who are already paying a monthly fee for an Internet connection, this means that you can use that same connection to place free long distance phone calls. This process works by using already available VoIP software to make phone calls over the Internet, essentially circumventing phone companies and their service charges.

Besides, VoIP gives a greater flexibility to business travelers. Make VoIP calls from anywhere with Internet connections thru your laptop. With VoIP, you can also enjoy enhanced calling features such as calls forwarding, caller ids, call blockings and voicemail calls function.

How VoIP works?

We already knew when making VoIP calls, caller’s voice in analog form are collected; transformed into digital form; transmitted through Internet; and transformed again into analog voice for the listeners to listen.

However, how does the digital voice signal travel? Unlike conventional phone system that relies on circuit switching; voice signals in VoIP calls are transfer through packet-switching.

Packet-switching is the same method that you use when you view a website. For example, as you read this website, your PC does not maintain constant connection to the website. Instead, connections are only made to send and receive information on an as needed basis. It works the same for VoIP calls as this system allows the transfer of information over the Internet to work so quickly. While circuit switching (conventional telephone calls) maintains a constant and open connection; packet-switching builds a connections that is just enough for sending/receiving bits of data in the VoIP conversations.

By utilizing this special way of data sending, VoIP calls can be done with very little data transmission. This in turn allows voice signals to be sent on the least congested lines and thus a cheaper calling plans.

Drawbacks on VoIP calls

While most analysts consider it will be at least a decade before companies and telephone providers make the full switch to VoIP, the hidden power for the technology’s applications nowadays are very impressive.

Not to mention the emergency call issue on VoIP calls; there are quite a few VoIP’s drawbacks that need to be solved in order to have VoIP calls replace our conventional telephones. The power problem of VoIP phones, the security of the VoIP calls, as well as the compatible-ability of VoIP phones with other electronics appliances are some of the major problems that need to be solved.

Bottom line

Undeniable, VoIP is now a very powerful communication way that you can’t close the eyes to. To replace the traditional telephone system or not, VoIP service is here to hang about. Millions in United States are using VoIP calls nowadays and the numbers seem growing rapidly. With the savings and flexibility that the technology already offers, and new advances just ahead on the horizon, we can expect those numbers will only increase in the future.

The author, Claudia Walters, is an expert writer in office tools and VOIP technologies. View her latest writing assignments on Internet answering machine at http://www.MyCallWave.com Learn how you can avoid missing calls while online with CallWave call alerts and save up the cost for an extra phone line.

Cable Internet Admin on 29 Mar 2008

What is Cable Internet Service

Unlike your DSL internet access, cable internet is acquired through your local Cable TV provider. This usually provides internet access faster than most of the broadband services available.

This technology uses your existing cable TV lines to access the internet. You will pay an additional fee to your cable TV provider for this extra service. If you were previously using dial up internet connection, you will probably notice a huge speed increase when you access the internet.

The advantage of this broadband internet connection than other types of broadband is speed. It typically offers faster speeds than most broadband internet types such as the DSL and satellite internet.

However, your cable internet speed depends largely on how many people is subscribing in the same company. The more the subscriber, the more you will be sharing bandwidth, therefore, the slower your internet will be.

Cable internet is also slightly more expensive than DSL internet.

Since a cable internet has a high-speed internet connection, it offers many benefits, whether for personal use or for business.

Cable internet connection can give you the ability to download files and software faster than any other type of internet connection. This means you can share more files faster, like pictures to your friends and family wherever they are.

Another advantage is that you can play online multiplayer games and join small communities in virtual worlds.

With fast internet connection, you can use VoIP internet phones. This technology allows you to call relatives wherever they are in the world for little or no fee. VoIP also has built in features that your traditional phone company considers as additional features and charges expensive fees. Some additional features are the video phone calls, caller ID, call waiting, voice messages, long distance calls, conference calls and more.

With cable internet access, you can now play internet radio smoothly and high audio quality than dial ups can offer. You can also watch video streams like short online movies or music videos in the internet without interruptions in cable internet access.

You can also watch the latest sport events in the internet with this internet connection. Because it is fast, there will be no interruptions while you are watching.

Buying music online will be more convenient and cheaper than buying on your local music stores. All you have to do is go to an online music store and download your favorite music.

Download your favorite movies in the internet. With dial ups, these can take days or even weeks, therefore expensive. With cable internet, you can download full-length movies in a matter of hours.

Businesses can also benefit with cable internet access. Instead of traveling, they can do meetings using video conferencing. This feature can save them many travel expenses by just attending a meeting or product presentation to their clients. They can now easily close deals, therefore, more profit to their business.

Are you a student doing your homework? With cable internet, you no longer have to run to the public library to do all your research, the internet is a huge library itself and can provide you as much information as you want about your research. Since cable internet is fast, you can visit many websites to do your research and finish half the time than by using dial ups.

There are more advantages by using cable internet services. It can benefit your studies, businesses, or you can simply entertain yourself by listening to music, playing online multiplayer games or watch movies.

Communicating to your family and friends are also easier and much more convenient than a dial up internet can provide.

Bob Hett has extensively covered the Internet Service Provider industry as an analyst and has researched the various companies for factors based on price, reliability, support and overall quality. Learn more at Cable Internet Service

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