Signalling and control protocol for a communication system
Signalling method for establishing trunked communication
Small wireless telecommunications system
Sound and vision communications terminal including an auxiliary
Speak back paging system
Speakerphone for cellular telephones with howl prevention, detec
Speakerphone using digitally compressed audio to control voice p
Speakerphone using digitally compressed audio to detect acoustic
Specialized call routing method and apparatus for a cellular com
Speech compensation in dual-mode telephone
Speech recognition system for electronic switches in a cellular
Status indicator control for cellular mobile telephone system
Steering wheel having a telephone
Still image video telephone transmission system
Still picture picturephone communications system
Still picture transmission device
Structure for mounting a microphone on a portable radio telephon
Switching system with video switching matrix
Switching transcoder
Synchronizing groups of base stations in time division duplex co