Digital subscriber line transmission method, apparatus and...

Digitally-tunable echo-cancelling analog front end for...

Distributed system and method for the remote acquisition of...

Distributed system and method for the remote acquisition of...

Double talk detector for echo cancellation in a speech...

Double-Talk detector for echo canceller

DSL active modem detection

DSL transmission system with means for ensuring local echo...

DTMF transmission structure of W-CDMA WLL system

Dual-mode analog/digital adaptive echo cancellation in...

Duplex signal multiplexing system

Duplexer and communication device

Duplexer with a differential receiver port implemented using...

Dynamic control protocol for frame relay fragmentation in...

Dynamic establishment of virtual circuits using...

Echo canceler

Echo canceler gain tracker for cellular modems

Echo canceling apparatus having a plurality of frame aligners as

Echo canceling method and apparatus for data over cellular

Echo canceling method and apparatus for digital data...