Telephonic communications – Special services – Call diversion
Patent
1985-02-07
1987-08-11
Brown, Thomas W.
Telephonic communications
Special services
Call diversion
379269, 379289, H04M 354, H04Q 347
Patent
active
046867015
ABSTRACT:
A distributed control switching system where the system control units cooperatively perform the terminating port determination function. The control unit associated with the terminating port stores sequence call data defining whether calls are to be completed to that terminating port or are to be forwarded to another directory number. Upon determining that a given call is a sequence call, the control unit associated with the original terminating port determines the terminating port defined by the second directory number and effects a reduction of the sequence call to a simple call between the originating port and the second terminating port. This is done either by transmitting a control message defining the originating and terminating ports to the control unit associated with the second terminating port or by returning the setup sequence to the control unit associated with the originating port which then frees any switching system resources previously allocated to the call and transmits the control message. In either case, the control unit associated with the second terminating port completes the call without knowing whether the call is a sequence call or a simple call completed to the original terminating port.
REFERENCES:
patent: 3643032 (1972-02-01), Ulrich et al.
patent: 3860761 (1975-01-01), O'Neill, Jr.
patent: 4256926 (1981-03-01), Pitroda et al.
patent: 4259549 (1981-03-01), Stehman
patent: 4317962 (1982-03-01), Cox et al.
patent: 4322843 (1982-03-01), Beuscher et al.
patent: 4340776 (1982-07-01), Ganz et al.
patent: 4421955 (1983-12-01), Mori et al.
patent: 4442321 (1984-04-01), Stehman
patent: 4583218 (1986-04-01), Ardon et al.
H. Takeda et al., "Time Division Switching Control System", Review of the Electrical Communication Laboratories, vol. 27, No. 9-10, Sep.-Oct. 1979, pp. 773-782.
G. Becker et al., "Call Processing in a Distributed Control System", ICC '80 Conference Record, vol. 3 of 3, Jun. 8-12, 1980, pp. 46.4.1-46.4.7.
D. Jackson and K. Patfield, "Impacts of Multiprocessing on GTD-5 EAX Call Processing and Operating System", ISS'81 CIC Montreal, Sep. 21-25, 1981, pp. 1-7.
M. Akiyama et al., "Time Division Distributed Switching System", ISS'81 CIC Montreal, Sep. 21-25, 1981, pp. 1-7.
U.S. patent application of M. M. Chodrow et al. "Switching System Having Remote Switching Capability", No. 493,683, Filed May 11, 1983.
Ahmad Mahmood
Sawyer Albert J.
Schreiner Wayne L.
Thomas Gerald H.
American Telephone and Telegraph Company AT&T Bell Laboratories
Brown Thomas W.
Watland Ross T.
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