System for transmitting HDLC frames on a PCM type link using a s

Details System for transmitting HDLC frames on a PCM type link using a s System for transmitting HDLC frames on a PCM type link using a s

1989-12-29

1991-10-08

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370102, H04L 522

Patent

active

050560840

ABSTRACT:
A system for transmitting HDLC frames on a PCM type link uses a single HDLC circuit and a transposition buffer memory to provide a compact system by economizing on the number of components, enabling operation at high speed without risk of starvation on the PCM link. The system uses a single transposition buffer memory with a read cycle distinct from the write cycle cooperating with a single single-channel HDLC frame formatting circuit. The memory is written with the formatted HDLC frames and read under the control of means for selective sampling in the memory of data for building successive blocks of interleaved channels of the PCM frame.

REFERENCES:
patent: 4531211 (1985-07-01), Hadziomerovic
patent: 4542498 (1985-09-01), Bodros et al.
patent: 4597074 (1986-06-01), Demichelis et al.
patent: 4958342 (1990-09-01), Williams et al.

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