Recovery of previous filter coefficients with smaller capacity m
Reduction of signal processing requirements in a 2B1Q-code echo
Remote terminal unit connector
Resistive line feed circuit
Ring-back powered telephone with nonvolatile memory structure
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