Relating exchanges

Details Relating exchanges Relating exchanges

1990-03-28

1992-09-22

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 581, H04G 1104, H04J 116, H04J 314

Patent

active

051503557

ABSTRACT:
An electronic cross connect frame for an exchange or a multiplexor therefor is provided in which an analogue access matrix is provided for providing a limited number of spare cards or different cards to which any of the lines may be switched to provide a "sparing" or alternative services.

REFERENCES:
patent: 4473900 (1984-09-01), Belforte et al.
patent: 4853957 (1989-08-01), Seeger et al.
patent: 4866700 (1989-09-01), Berry et al.
patent: 5014264 (1991-05-01), Nagler et al.

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