Transmitting/receiving system having digital switching network

Details Transmitting/receiving system having digital switching network Transmitting/receiving system having digital switching network

1993-02-10

1994-06-07

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, 379225, 379229, 379230, H04J 312

Patent

active

053196406

ABSTRACT:
Transmitting/receiving system includes a plurality of analog junction lines and analog tie trunks provided at two ends of the analog junction lines. The PBX is provided with an analog junction line-ISDN converting unit. The analog junction line-ISDN converting unit is operative to transfer B-channel signals on a first analog junction line through the PBX network and the analog tie trunks and to transfer D-channel signals on a second analog junction line.

REFERENCES:
patent: 4757526 (1988-07-01), Foster et al.
patent: 4903263 (1990-02-01), Patel et al.

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