Subscriber line interface circuitry
Subscriber line interface circuitry
Subscriber line interface circuitry
Subscriber line interface circuitry transceiver
Subscriber line interface circuitry transceiver
Subscriber line interface circuitry transceiver
Subscriber line interface circuitry with common base audio...
Subscriber line interface for improving the frequency characteri
Subscriber line system having a dual-mode filter for voice commu
Subscriber loop interface circuitry having bifurcated common...
Subscriber loop reconnection device and method
Subscriber matching circuit for electronic exchange
Subscriber telephone line interface circuit with reduced power s
Subscriber terminal apparatus
Summing amplifier with a complex weighting factor and interface
Supply circuit device for a user's telephone circuit, having a l
Supply circuit for a telecommunication line, providing highly sy
Supply circuit for a variable load, particularly for a line circ
Supply circuit for supplying a two-wire line
Supply power transition control