Frame format for PCM speech data in a telephone transmission sys

Details Frame format for PCM speech data in a telephone transmission sys Frame format for PCM speech data in a telephone transmission sys

1981-03-31

1983-07-19

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, 179 2DP, H04J 306, H04J 312

Patent

active

043947573

ABSTRACT:
A frame format for PCM speech data in a telphone transmission system and a digital telephone apparatus for use with this frame format are disclosed. The frame format includes a superframe formed of 32 data frames, each comprising three 8 bit data words (bytes). The first data word of a frame includes a synchronization code and a signalling code; the second and third data words include PCM speech samples or other digital data. A transmission rate of 192 kilobits/second is chosen so as to match the PCM sampling rate of 8 KHz.

REFERENCES:
patent: 3207851 (1965-09-01), Fukinuki
patent: 3937882 (1976-02-01), Bingham
"Fernsprechendgerate in Digitaler Technik" NTZ, vol. 33 (1980), No. 12, by Peter Hirschmann.

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