Protected muldem with interchangeable circuits of different data

Details Protected muldem with interchangeable circuits of different data Protected muldem with interchangeable circuits of different data

Filed on

1980-06-03

Date issued

1983-03-01

Examiner

Olms, Douglas W.

Patent Class

Multiplex communications

SubClass

Wide area network

SubSubClass

Packet switching

Other Related Categories

370 84, H09J 314

Type

Patent

Status

active

Patent number

043756816

Description

ABSTRACT:
A muldem (100) has a monitor (101) for testing data path failures and standby data protective switching means (108, 109) providing an alternate data path in the event of a malfunction. The system accepts up to fifty-six standard low speed T1 LS lines (1.544 Mb/s), up to fourteen standard intermediate speed T2 lines (6.312 Mb/s), or any combination of T1 and T2 lines to generate to standard HS lines (44.736 Mb/s). The T1 circuitry is replaceably interchangeable with the T2 circuitry.

REFERENCES:
patent: 4254496 (1981-03-01), Munter
Product Description Digital Multiplexer/Demultiplexer DMX-13A/B/C, Rockwell International, pp. 1-19/20, 1-19-79.

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