Telephonic communications – Special services – Call diversion
Patent
1986-09-22
1989-02-28
Dwyer, James L.
Telephonic communications
Special services
Call diversion
379210, 379214, H04M 358
Patent
active
048093211
ABSTRACT:
Call completion equipment (10) is disclosed for use with a switching system (14) for assisting callers to complete telephone calls thereto. If a primary destination telephone set (16) is busy or does not answer, a message is transmitted from a message storage unit (54) to the calling party. The message relates to the selection by the caller of secondary destinations including a switchboard attendent 18, an alternate destination telephone set, a camp-on option or voice messaging facilities. A processor complex (72) processes the digits dialed by the caller in response to the message, using various look-up tables (85-87), and transfers corresponding information to the switching system (14). The switching system (14) completes the call to the secondary destination according to the information. The invention (10) provides automatic camp-on features (87) with regard to predefined telephone sets of the switching system (14). Self-adaptive tone learn apparatus (50) and programs (88) are provided to learn the particular signature characteristics of call progress tones transmitted by the telephone switching system (14).
REFERENCES:
patent: 3956595 (1976-05-01), Sobanski
patent: 4696028 (1987-09-01), Morganstein
"OPCOM D.I.A.L. Telemessaging System", Brochure, OPCOM, Sep., 1984.
Klecka Mark D.
Krakau Herbert B.
Mehta Bakulesh A.
Milsted Neil F. N.
Morganstein Sanford J.
Chauza Roger N.
Dwyer James L.
Dytel Corporation
Mills Jerry W.
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