Mac multiplexing and tfc selection procedure for enhanced...

Mach-zehnder based filter demultiplexers and method

Mach-zhender interferometer (mzi) filter devices

Magneplex modulation

Magnetic commutator

Maintaining a global time reference among a group of...

Maintenance response signalling arrangement for a digital...

Management unit for asynchronous time division multiplex...

Managing bandwidth on demand for internet protocol messaging...

Mapping arbitrary signals into sonet

Mapping six (6) eight (8) mbit/s signals to a sonet frame

Matrix-controlled phase-pulse generator

Maximising power in optical communication networks

Means and method for telephone line disconnection in...

Means for synchronizing local clocks with remote clocks

Means of ringing over multiplex transmission channels

Means of testing underbalance

Measurement of noise in a communication channel

Measurement of noise in a communication channel

Measurement of noise in a communications channel