channel， voice-band

Speech channel Voice Channel

FVC Forward Voice Channel

Multi-channel Voice Data Access Card

one complete voice channel

private voice-band network

RVC Reverse Voice Channel

VBD Voice Band Data

VC Voice Channel

VCP Voice Channel Processor

VOBANC VOice BANd Compressor

VOice BANd

voice channel

Voice Channel Characteristic

voice channel coder

Voice Channel Fax

Voice channel loss

voice channel multiplexer

voice-band