Different Types of Broadband Access

ADSL – Asymmetric digital subscriber line

What they are used for…

>> A type of digital subscriber line (DSL).

>> Data communications tech that enables faster data transmission over copper telephone lines.

>> Uses most of the channel to transmit downstream to the user and only a small part to receive information from the user.

>> Used for internet access, calls, faxing, phone calls.

Advantages

>> Faster than a conventional voice band modem can provide.

>> Well-suited for gaming, CAD, downloading large files and also for streaming multi-media.

>> Can be used for internet access at the same time as voice calls.

>> Uses the existing infrastructure so little set up costs.

>> Bigger capacity for downloads.

Disadvantages

>> It is not available everywhere and must be connected to a phone line.

>> It offers different speeds at different times of the day due to usage of others in the area.

>> Faster to receive downloads than to upload data or files.

>> When the distance from the telephone exchange is further, the signal strength is the weaker.

Cable

What they are used for…

>> Cable internet relies upon the coaxial cable to provide pay TV – done by two conductors being parted by an insulator.

>> Cable internet uses the existing lines for your cable TV to provide service, all over one cable and through a provider.

>> Means users can browse the web and watch TV at the same time.

Advantages

>> Speeds vary from provider to provider, and are generally faster than speeds available over ADSL.

>> Cost-effective way to get a high-speed internet connection.

>> The signal doesn’t deteriorate over long distances.

>> Operates without a phone line, so you always have a connection.

Disadvantages

>> Coax or fibre optic cable needs to be laid in that area.

>> Shared bandwidth in same area so performance can weaken when many users are online.

>> May require connection fees from the provider as new cable may have to be laid in that area, can be costly.

Wireless

What they are used for…

>> Access points (like pylons) broadcast a wireless signal that devices can detect and "tune" into, accessing the wireless broadband – but must have access from the provider, such as paid contracts.

>> It…