Structure and method for combining PCM and common control data o

Details Structure and method for combining PCM and common control data o Structure and method for combining PCM and common control data o

1993-02-11

1995-05-02

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 856, 370 8511, 3701001, H04L 12407

Patent

active

054126517

ABSTRACT:
A method for transporting common control data on a backplane bus under the SONET standard uses the section and line overhead bytes. A unit is assigned a predefined number of time slots during in the STS-1 synchronous payload envelope to assert a data transmission request on a request/acknowledge bus. Each unit keeps queue and count-down counters for monitoring, respectively, the total number of pending packets in the system and the number of packets ahead of the unit's own queued transmission. This method is implemented on a PCM bus using a transmission circuit and a receiving circuit.

REFERENCES:
patent: 4596025 (1986-06-01), Satoh
patent: 4608700 (1986-08-01), Kirtley, Jr. et al.
patent: 4922244 (1990-05-01), Hullet et al.
patent: 5079763 (1992-01-01), Chao et al.
patent: 5124981 (1992-06-01), Golding

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