Network Connections Type
ATM (asynchronous transfer mode) - the protocol used to "gather" DSL traffic from users and forward it to a DSLAM, which consolidates traffic across the backbone network. Carries data in fixed-length frames of 53 bytes each. ATU-C (ADSL Termination Unit - Central Office) - the downstream channel. ATU-R (ADSL Termination Unit - Remote) - the upstream channel. CAP (carrierless amplitude/phase modulation) - the original ADSL modulation approach in which the signal frequency range is divided into voice (0-4 KHz), upstream data, and downstream data. DMT (discrete multitone) is now the preferred modulation alternative over CAP. CDSL (Consumer DSL) - a trademarked version of DSL from Rockwell that is somewhat slower than ADSL (1 Mbps downstream, probably less upstream) but has the advantage that a "splitter" does not need to be installed at the user's end. CDSL uses its own carrier technology rather than DMT or CAP ADSL technology. DMT (Discrete Multito...