Acronym: oice perated e change Audio, Telephony: A feature on recorders and telephones that uses a sound-sensitive trigger to allow for hands-free use. The trigger opens a switch to begin recording or transmitting when noise is detected.
VOice data. A file that contains raw sound data and no information about the formatting of the file. See also my article on Sound.
Voice over IP, Frame, ATM, IP over ATM, or some other voice/data convergent technology separate and distinct from traditional Time Division Multiplexing (TDM).
"Voice Operated Relay"; allows the presence of a sound to trigger the PTT.
Dialogic ADPCM format. The Dialogic ADPCM format is commonly found in telephony applications, and has been optimized for low sample rate voice. It will only save mono 16-bit audio, and like other ADPCM formats, it compresses to 4-bits/sample (for a 4:1 ratio). This format has no header, so any file format with the extension .VOX will be assumed to be in this format.