Advantages of DSL 1. The speed is much ... ISDN support transmission distance of 18000 feet over existing copper wires and use 2B1Q line coding technique. 2B1Q means two binary one Quaternary, a line coding technique that compresses two binary bits of data into one time state as a four level code. ac HDSL also usedanbsp;...
|Title||:||Telecommunication Switching Systems and Networks|
|Publisher||:||Technical Publications - 2009-01-01|