Digital trunk adapter terminal unit

Details Digital trunk adapter terminal unit Digital trunk adapter terminal unit

1985-06-12

1987-08-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, H04Q 1104, H04J 312

Patent

active

046851003

ABSTRACT:
An adapter terminal unit is designed to connect to the time-division switching center of which it forms part at least one digital trunk to a standard different to that normally applicable to the digital trunks associated with the switching center. Each adapter terminal unit, equipped with a microprocessor-based control circuit, is connected by a switching matrix to the input/output lines of the switching center's switching matrix. It further comprises a data and signaling transfer device connected to the switching matrix and to a transmitter device and to a receiver device, one at the end of a transmit multiplex link and the other at the end of a receive multiplex link of the digital trunk. In this way the standard changes necessary for exchanges between the digital trunk and the switching center are effected.

REFERENCES:
patent: 4491944 (1985-01-01), Caizergues et al.
patent: 4499575 (1985-02-01), Dupuis et al.
patent: 4546469 (1985-10-01), Farrel et al.

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