Advantages of DSL 1. The speed is much higher than a ... 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 codeanbsp;...
|Title||:||Computer Communication Networks|
|Publisher||:||Technical Publications - 2009-01-01|