System for providing data services to a circuit switched exchang

Details System for providing data services to a circuit switched exchang System for providing data services to a circuit switched exchang

1987-11-16

1988-12-06

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, H04Q 1104

Patent

active

047899816

ABSTRACT:
A system for providing data services in an evolutionary fashion as well as providing access to external data communication networks for subscribers to a circuit switched voice exchange includes a data services adjunct connected in series with presently existing voice communication paths.

REFERENCES:
patent: 4413337 (1983-11-01), Dauphin et al.
patent: 4476559 (1984-10-01), Brolin et al.
patent: 4488294 (1984-12-01), Christensen et al.
patent: 4512017 (1985-04-01), Nici et al.

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