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

Subscriber line interface circuit providing regulated current

Subscriber line interface circuit with improved d.c. balance

Subscriber line interface circuit with reduced on-chip power dis

Subscriber telephone line interface circuit with reduced power s

Supply circuit device for a user's telephone circuit, having a l

Switch controller and method

Switching type echo canceler

Switching voltage regulator for an interface circuit in a teleph

System and method for an efficiently constrained frequency-domai

System and method for avoiding false convergence in the presence

System and method for cooling of network interface device

System and method for distributing network communication...

System and method for echo cancelling and mobile communications

System and method for performing echo cancellation in a communic

System for bidirectional digital transmission with echo cancella