Synonym voice-frequency telegraph.

In the public regulated telecommunications services, a service grade that is described in part 68, Title 47 of the Code of Federal Regulations [CFR].
Note: Voice-grade service does not imply any specific signaling or supervisory scheme.

The field within a voice packet that contains blocks arranged according to the significance of the bits: the first block contains the most significant bits (MSBs) of all samples, the second contains the second MSBs, and so on. Within a block, bits are ordered according to their corresponding sample numbers. [After T1.312-1991]

Synonym vox.

Synonym vox.

The element that provides routing information to support the routing of VoIP emergency calls, and cooperates in delivering location information to the PSAP over the existing ALI DB infrastructure. The VPC supports access to the routing data in the Emergency Routing Database.

See quasi-analog signal.

A channel capable of carrying analog and quasi-analog signals.

A method of multiplexing one or more dc telegraph channels onto a nominal 4-kHz voice frequency channel. Synonym voice frequency carrier telegraph.

See vodas.