Synchronous packet manager

Multiplex communications – Wide area network – Packet switching

Patent

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Details

370 94, H04L 500

Patent

active

047837780

ABSTRACT:
The Synchronous Packet Manager is the interface for switching synchronous data between a data terminal equipment and a combination data and telephone switching system in a proprietary packet format. A first microprocessor controlled circuit controls data to be received from the switching system or forwarded to it and communicates with a second microprocessor controlled circuit for controlling data to or from a terminal equipment via a common memory.

REFERENCES:
patent: 4578789 (1986-03-01), Middleton et al.
patent: 4584690 (1986-04-01), Cafiero et al.
patent: 4637035 (1987-01-01), Betts
"8274 Multi-Protocol Serial Controller (MPSC)", Intel Corp., 1980, pp. 1-35.

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