Metallic current limiter

Method and apparatus for adapting a phone for use in network...

Method and apparatus for applying multiple speech processing fea

Method and apparatus for calculating DC offset in a digital...

Method and apparatus for canceling echo accounting for delay var

Method and apparatus for cancelling echo originating from a...

Method and apparatus for detecting a compatible phantom...

Method and apparatus for detecting speech at a near-end of a com

Method and apparatus for echo canceler disablement

Method and apparatus for echo canceling in a communication syste

Method and apparatus for echo compensator connection for telepho

Method and apparatus for echo removal in a communication system

Method and apparatus for feeding power to a telephone line such

Method and apparatus for improved control and time sharing of an

Method and apparatus for maintaining audio sample correlation

Method and apparatus for providing a ground reference for teleph

Method and apparatus for providing service to VODSL derived...

Method and apparatus for removing FSK in-band signaling

Method and apparatus for transmitting white noise for echo cance

Method and arrangement for supplying direct current to a telepho