Sealed terminating device
Sealing current generator for a telephone circuit
Security mechanism for snap latch devices
Self configuring telephone headset amplifier
Self-adaptive echo canceller capable of keeping a degree of canc
Semiconductor integrated device
Signal splitter with test relays on auxiliary circuit board...
Speech recognition method and system with improved voice-activat
Splitter assembly for a telecommunications system
Splitter assembly with high density backplane board
Splitting of a supply current drawn from a telecommunication sys
Standby high voltage analog line feed
Station line interface circuit for a telecommunication network
Subband echo cancellation method for multichannel audio...
Subscriber circuit link interface for an automatic telephone exc
Subscriber interface circuit
Subscriber line circuit having an improved loop current supply c
Subscriber line interface circuit
Subscriber line interface circuit
Subscriber line interface circuit and transformer therefor north