Cable ISPs
Various companies today provide Internet services in a number of mediums that depends upon the various geographical and demographic factors. The mediums for Internet services include satellite, cable broadband, ISDN, DSL, and dial-up.
The cable Internet service is provided by a tie-up between the local cable TV company and an ISP (Internet Service Provider). A television signal occupies 6 Mhz on the coaxial cable, which is used to deliver cable television signals. There is a lot of unused space left over in the coaxial cable that can deliver broadband Internet.
Cable Internet speed is inversely proportional to the number of users. This causes the speed to deteriorate during peak hours. The cable company may offer a discount for ordering both cable TV and cable broadband service from them. However, a survey report states that 24% of all cable connections need to be repaired at some point or the other. DSL connections are comparatively better, where only about 12% need to be repaired.
A modem is usually provided free of charge with the package, which can be either external or internal to the CPU. It can even be a part of the set-top box.
To connect to Internet at much faster speeds, cable modems use existing cable-wire network. As the same line is shared with other users in the area, it could lead to congestion problems and other such performance related issues. The speed is much higher in the case of DSL and not too expensive either.
Cable networks share the line that compromises on privacy. Hacking tools are easier to use on cable modems. It is possible to access secure information through them.
In a recent ruling, the FCC (Federal Communications Commission) classified cable-modem service as an ?informative service?, thereby distinguishing it from cable or telecommunication services. This means that now the large ISPs do not have to share their network with smaller competitors.
Satellite Internet
Types of broadband
One of the first decisions to be made is what kind of connection you want. There are several options for setting up high-speed services, which all come under the broadband umbrella. However, the type of broadband service you need and have access to will be determined by your speed requirements, budget, and the location (city or regional) of your home or office.
ISDN
Meaning integrated services digital network, a standard to send video, voice and data over a digital telephone line. Isdn is a circuit-switched telephone network system, designed to allow digital transmission of voice and data over ordinary telephone, resulting in better voice quality than an analog phone. One of the major use cases is Internet access, where ISDN typically provides a maximum of 128 kbit/s (which cannot be considered to be a broadband speed).
In a videoconference, ISDN provides simultaneous voice, video, and text transmission between individual desktop videoconferencing systems and group (room) videoconferencing systems.
DSL
DSL broadband technology supplies significantly faster data transfer speeds than dial-up Internet, without a huge investment. It is a cost effective and convenient permanent connection.
Dsl provide digital data transmission over the wires of a local telephone network.
Typically, the download speed of consumer DSL services ranges from 256 kilobits per second (kbit/s) to 24,000 kbit/s, depending on DSL technology, line conditions and service level implemented. Typically, upload speed is lower than download speed for Asymmetric Digital Subscriber Line (ADSL) and equal to download speed for Symmetric Digital Subscriber Line (SDSL).
Cable
Cable is considered to be more stable than ADSL, with consistently high speeds. Many providers offer bundled deals with your phone and/or cable TV, which can save you quite a bit of cash in the long run. However, the installation process is more complex than ADSL, and may require a tradesman to run a cable into your house from out in the street. The fibre networks that bring you cable TV at home can be more than an addition to your viewing options — it can also be your means to fast Internet access.
Satellite
Satellite is often touted as an alternative to fixed-line access such as cable or ADSLand has succeeded in providing much faster and often more reliable Internet service, particularly in rural and regional areas, than the standard public system telephone network. Internet access via satellite is available worldwide, including vessels at sea and mobile land vehicles
Wireless
This data-only system utilises a small base station connected to a wired network or to the Internet and transmits data wirelessly to multiple workstations, which can be desktops, notebooks or even handheld PCs. Each base station can service several users equipped with wireless receiver cards in their computer, and base stations can be overlapped to allow several hundred users to access the network or Internet.
Broadband Internet Access
Broadband Internet access has redefined the boundaries of web networking. The time required to access the Internet, as well as to download information of different frequencies from the web, has been dramatically reduced. Web information is conveniently and easily accessible without being affected by long distances.
Broadband Internet access is especially suitable for those who require instant and prolonged or constant (24/7) access to the Internet. Although it is a little more expensive then the traditional narrow-band Internet connection or dial-up network, the benefits fully compensate for the little price difference. A broadband connection ensures that the functioning of the cable and television line is not affected during connection, and vice-versa.
There are different types of broadband Internet access. The most efficient and reliable way it is accessed by home customers is through a cable broadband connection. This runs on an existing cable or coaxial connection. Another convenient way to access this technology is a DSL connection that uses an existing telephone line. Both these technologies are widely used by urbanites already having a telephone or cable connection. Most subscribers provide a 24-hour service for a flat monthly price.
The T1 and T3 type of broadband connection is generally accessed by large business houses and universities. These oldest forms of broadband connections are the most efficient, but are also the most expensive. Access to broadband Internet connections is dependent on one’s geographical location. Although distance doesn’t usually affect speed and efficiency, the availability of infrastructure is a problem in remote rural areas and while one is traveling. Many of these difficulties have been addressed by the advent of satellite broadband Internet connections using land stations to receive land station transmissions.
Wi-fi, or wireless broadband connection, is a revolutionary technology that promises to remove the restraints of distance, time and location. It allows one to access the net even in mid-air. Technology and special programs have made broadband Internet access viable for senior citizens or people with special needs (deaf or blind).
Article Autor:Alison Cole To learn more , check out the e-broadbandinternet.com site.
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