Call forwarding arrangement

Details Call forwarding arrangement Call forwarding arrangement

1987-12-17

1990-01-09

Dwyer, James L.

Telephonic communications

Special services

Call diversion

379210, 379375, 379164, H04M 354

Patent

active

048933368

ABSTRACT:
An improved call forwarding arrangement where forwarded calls receive different terminating treatment from non-forwarded calls, for example providing a readily detectable, distinctive alerting signal for forwarded calls or completing only forwarded calls to a station and denying or forwarding other calls without requiring any customer involvement. The arrangement provides an improved call forwarding service for customers with advanced station display capabilities and, in addition, allows selective answering of only forwarded calls by customers that have conventional, analog station equipment. Both switch-based and station-based implements are disclosed.

REFERENCES:
patent: 4278844 (1981-07-01), Jones
patent: 4567333 (1986-01-01), Embree et al.
patent: 4646347 (1987-02-01), Liu
D. L. Huebner, "Intelligent Telephones and Generic Switching: A Distributed Processing PABX Architecture", GTE ISS '84, Florence, 7-11 May 1984.
"ISDN User-Network Interface Network Layer Specification-Basic Voice Services," AT&T 5ESS.RTM. Switch ISDN Basic Rate Interface Specification (5E4 Generic Program), 1985, pp. i, ii, IV-1 through IV-63.
"ISDN User-Network Interface-Network Layer Specification for Supplementary Voice Services," AT&T 5ESS Switch ISDN Basic Rate Interface Specification (5E4 Generic Program), 1985, pp. i through v, V-1 through V-204.
"ISDN User-Network Interface-Network Layer Specification for Supplementary Voice Services", AT&T 5ESS.TM. Switch ISDN Basic Rate Interface Specification (5E4 Generic Program), 1985, pp. V-1, V-2, V-46, V-47, V-94 through V-101.

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