Modem line connection circuit and the control circuit

Modem loop current detect system to detect an off-hook condition

Modular device for telephone network interface apparatus

Modular layered network interface unit

Modular layered network interface unit having improved cable dre

Modular layered network interface unit particularly suited for s

Modular layered network interface unit particularly suited to a

Modular network interface device

Modular protected entrance terminal

Modular telephone line connecting disconnecting and testing bloc

Module for rapid interconnection of two monopair telephone lines

Monitor network for a digital switching cross-connect module

Monolithically integratable telephone circuit for feeding a subs

Monolithically integrated telephone circuit for driving...

MOS transistors substitute circuit having a transformer/data...

Multi-channel echo canceler and method using convolution of two

Multi-channel echo canceling method and apparatus

Multi-channel echo cancellation with adaptive filters having sel

Multi-dwelling unit module for passive optical networks

Multi-line station interface