Universal PBX interface

Details Universal PBX interface Universal PBX interface

1988-03-31

1989-04-18

Brown, Thomas W.

Telephonic communications

Plural exchange network or interconnection

Interexchange signalling

379 88, 379234, 379281, H04M 350, H04M 714

Patent

active

048233781

ABSTRACT:
A universal PBX-to-central office interface for standards conversion is described for supporting normally incompatible telephone equipment in PBX environments. The present invention is adapted for connection between the central office and a PBX along DID and DOD trunk lines. The present invention will capture incomping signaling and data in any one of three dialing modes (DTMF, MF and pulse dial) and convert this standard to whatever dialing mode is required by the equipment attached to the interface. The present invention will also do signaling conversion for peripheral equipment attached to PBX systems such as voice mail systems. The interface is capable of capturing extension signals transmitted from the central office to the PBX and saving them in memory for later downloading to a voice mail system to recover the extension of the dialed party after it has been forwarded to the voice mail system.

REFERENCES:
patent: 4076965 (1978-02-01), Olsen et al.
patent: 4254304 (1981-03-01), Fulghum et al.
patent: 4636584 (1987-01-01), Binkerd et al.

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