IJSRP, Volume 8, Issue 5, May 2018 Edition [ISSN 2250-3153]
Mohammad Liton Hossain, Abdur Rahim
Modems, in the beginning, were used mainly to communicate between data terminals and a host computer. Later, the use of modems was extended to communicate between end computers. This required more speed and the data rates increased from 300 bps in early days to 28.8bps today. Today, transmission involves data compression techniques which increase the rates, error detection and error correction for more reliability.