PBX DID and E and M tie trunk integration adapter and method

Details PBX DID and E and M tie trunk integration adapter and method PBX DID and E and M tie trunk integration adapter and method

1986-02-20

1988-12-20

Brown, Thomas W.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 84, 379211, 379213, 379233, H04M 350, H04M 354, H04M 714

Patent

active

047929677

ABSTRACT:
A private branch exchange (PBX) direct in dailing (DID) and an E&M tie trunk voice message integration adapter and method is disclosed. The invention permits a calling party on a DID line to a desired extension connected to a PBX to be automatically connected to the called party's mailbox in a VMS when the called extension is busy or does not answer.

REFERENCES:
patent: 3571517 (1971-03-01), Joel
patent: 3836723 (1974-09-01), Ohara et al.
patent: 4256928 (1981-03-01), Lesea et al.
patent: 4484031 (1984-11-01), Gray et al.
patent: 4625081 (1986-11-01), Lotito et al.
patent: 4629831 (1986-12-01), Curtin et al.
patent: 4634811 (1987-01-01), Curtin et al.
patent: 4672660 (1987-06-01), Curtin
patent: 4674116 (1987-06-01), Curtin et al.
Ishii et al, "Message Service by Automatic Intercept System", Japan Telecomm. Review, Jan. 1978, pp. 11-16.

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