Circuitry for recovery of data from certain bit positions of a T

Details Circuitry for recovery of data from certain bit positions of a T Circuitry for recovery of data from certain bit positions of a T

1982-10-19

1984-08-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 99, 370100, 3701101, H04J 306

Patent

active

044674694

ABSTRACT:
This circuit provides for retrieving common control interoffice signaling (CCIS) data from a PCM voice data stream of a T1 span. T1 spans interconnect switching offices. Unused data bits in these T1 spans are encoded with CCIS data and transmitted between the switching systems where the CCIS data is recovered.

REFERENCES:
patent: 3542957 (1968-10-01), Mitchell et al.
patent: 4151373 (1979-04-01), Widmer et al.
patent: 4191857 (1980-03-01), McLaughlin et al.
patent: 4268722 (1981-05-01), Little et al.
patent: 4314368 (1982-02-01), Decoursey et al.

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