DSL Advances

16.1 The History of DSL and Telephony

16.2 What Is Voice-over DSL ?

16.3 Telephony and Its Rapid Evolution

16.3.1 Digital Loop Carriers (DLCs)

16.3.2 Support for Voice-over Packet and Cell -based Networks

16.4 VoDSL Architectures

16.4.1 VoIP and DSL

16.4.2 VoATM on DSL ”Loop Extension

16.4.3 VoSTM

16.5 The Appeal of Voice-over DSL

16.5.1 Access to Packetized Voice Networks

16.5.2 Loop Extension

16.6 Service Models by Carriers

16.7 Standards Efforts for VoDSL

In addition to supporting data or multimedia traffic, DSL can be used to convey voice simultaneously along with the data. Several methods are discussed in this chapter.