ADSL
Ever wondered how it is possible to simultaneously surf the internet and make a call using the same telephone line?
ADSL(Asymmetrical Digital Subscriber Line) is a technology that enhances the performance of existing telephone line infrastructure.
The ADSL broadband service makes use of your existing telephone line by splitting the line into two distinct channels - one for voice and the other for the high speed data connection. The high speed data connection uses a higher frequency range not used in normal voice communications.
The ADSL signal is carried by two broadband modems - one in your home / office and the other in the telephone exchange.
The main benefit of ADSL is that you can use the line for normal voice communication and high speed / broadband access at the same time - often negating the need for a second line if it were to be used solely for Internet access!
Ultimately ADSL 'squeezes' more capacity out of a the same telephone line without interfering with your normal telephone services.
Optical Fibres are fibres of glass, usually about 120 micrometres in diameter, which are used to carry signals in the form of pulses of light over distances up to 50 km without the need for repeaters. These signals may be coded voice communications or computer data.