Virtual concatenation of optical channels in wdm networks

Virtual tributary/tributary unit transport method and apparatus

Vocabulary memory allocation for adaptive data compression...

Voice activity detection process and means for implementing...

Voice alarm signalling system

Voice and data apparatus comprising a selective tapping...

Voice and data communication system

Voice and data transmission system

Voice data discriminator

Voice modulation recognition in a radio-to-sip adapter

Voice or analog communication system employing adaptive...

Voice-data multiplexing system

Voltage setting apparatus in a multiplex transmission system

Watch pager system and communication protocol

Wave transmission system

Waveguide grating router having relatively small dimensions

Waveguide multiplexer/demultiplexer

Waveguide-arrayed optical wavelength...

Waveguide-network optical demultiplexer

Waveguide-type optical multiplexer/demultiplexer