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
Surge clamp protection circuit
Surge protection data access arrangement (DAA)
Switch controller and method
Switchable hybrid design for asymmetric digital subscriber line
Switchboard for dual-rate single-band communication system
Switched capacitor coupled line receiver circuit
Switched hybrid circuit for use with digital subscriber lines
Switching device for telecommunications channel
Switching device for transmitting telecommunication signals
Switching power supply for generating a ringing voltage
Switching type echo canceler