Unitary PCM rate converter and multiframe buffer

Details Unitary PCM rate converter and multiframe buffer Unitary PCM rate converter and multiframe buffer

1987-07-10

1989-02-14

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370112, 370 15, H04J 302

Patent

active

048051713

ABSTRACT:
A PCM rate conversion module is provided for interfacing a thirty-two channel PBX with a twenty-four channel link. The PCM conversion circuitry includes an inbound data memory station and an outbound data memory station wherein inbound T1 data is looped back out to the T1 data link and outbound PBX data is looped back out to the PBX. The looping provides effective and reliable testing of the rate conversion apparatus.

REFERENCES:
patent: 4322844 (1982-03-01), Fellinger et al.
patent: 4488294 (1984-12-01), Christensen et al.
patent: 4551830 (1985-11-01), Huffman
patent: 4580279 (1986-04-01), Kahn
patent: 4675862 (1987-06-01), Banzi, Jr. et al.
Microelectronic Products Data Book, Issue 1, Mitel Semiconductor, pp. 2-109 through 2-128, MH 89750, DS-1/T1 Digital Trunk Interface, Preliminary Information, Issue 2, Jan. 1985.

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