voice grade


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voice grade

The bandwidth required to transmit human voice, which is about 4,000 Hertz (4 kHz). The term may refer to an analog telephone line, but also to a digital line that supports the digital equivalent of voice (see DS0). Depending on the context of usage, the term may refer to a channel that is a step up or a step down from another type.
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References in periodicals archive ?
* For use within the building access network, the FM-8Videlivers long- range Ethernet using VDSL transport over voice grade cabling
The use of pulse code modulation by the telephone company has made a data rate of 64 Kbits/sec the norm for a voice channel, although at present the ordinary subscriber does not see those bits; what he gets is an analog voice grade connection.
In the United States, the company currently has 87.3 million voice grade equivalent lines, 10.3 million wireless customers and is undertaking a national expansion program that will bring SBC service to an additional 30 markets.
A modem employing dibit encoding would theoretically be capable of transmitting over a voice grade line at a.