Add-drop optical switches including parallel fixed and...

Add/drop filter for a multi-wavelength lightwave system

Add/drop multiplexer

Add/drop multiplexing in wdm optical networks

Add/drop node for an optical communications network

Added bit signalling in a telecommunications system

Adjustable optical demultiplexer

Adpcm encoder/decoder with signalling bit insertion

Advanced communication system architecture

Advanced intelligent network gateway

Advanced priority statistical multiplexing communication method

Agc isolation of information in tdma systems

Agile frequency converter for multi-channel systems with...

Alarm and test equipment for carrier systems

Alarm arrangement for a time-division multiplex, pulse-code...

Alarm immune program signal

Alarm signal suppression in telecommunications networks

Algorithms for minimizing excursion in placement of channel...

Alignment of bytes in a digital data bit stream

All digital tdma dynamic channel allocated satellite...