Pointer processing circuit in sonet system

Details Pointer processing circuit in sonet system Pointer processing circuit in sonet system

1992-12-18

1994-08-02

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 84, 370108, H04L 1258

Patent

active

053352238

ABSTRACT:
A pointer processing circuit which is incorporated in a SONET transmission apparatus having a cross connect equipment, is installed in the reception part of the cross connect equipment. The pointer processing circuit detects a phase difference between a multiplexed input frame signal for each input side transmission line, and receives a frame synchronous signal by which output frame signals are commonly synchronized. The frame synchronous signal is produced by a frame counter connected to the pointer processing circuit. The pointer processing circuit has a unit for adjusting a pointer value of the multiplexed input frame signal, based on the thus detected phase difference, before the cross connection of the input frame signals.

REFERENCES:
patent: 4596026 (1986-06-01), Cease et al.
patent: 4855999 (1989-08-01), Chao
patent: 4967405 (1990-10-01), Upp et al.
patent: 4967410 (1990-10-01), Takase et al.
patent: 5142529 (1992-08-01), Parruck et al.

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