Method and apparatus for alerting multiple telephones for an inc

Telephonic communications – Special services – Call diversion

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Details

379201, 379205, 379207, 379219, H04M 342, H04M 700

Patent

active

052069010

ABSTRACT:
A system for alerting a plurality of telephones in response to an incoming call to a destination directory number. A handling switch sends a query to a centralized database requesting routing instructions, and the database returns the directory numbers of the plurality of telephones to be alerted for incoming calls to the destination directory number. The busy/idle status of all of the plurality of telephones is checked, and an alerting signal is sent to all idle telephones. The handling switch is notified as to which alerted telephone has an off-hook appearance first, and the incoming call is routed to that telephone.

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patent: 4825465 (1989-04-01), Ryan
patent: 4953203 (1990-08-01), Shepard
patent: 5023868 (1991-06-01), Davidson et al.
Paul van Hal et al., "Service Script Interpreter, an Advanced Intelligent Network Platform", Ericsson Review, No. 1, 1990, pp. 12-22.
A. Batten, "Personal Communications Services and the Intelligent Network", British Telecommunications Engineering, vol. 9, Aug. 1990 pp. 88-91.
A. Barshefsky, et al., "The Evolution of Global Intelligent Network Architecture", AT&T Technical Journal, Summer 1991, pp. 11-25.
Alltel article "How the CallAnswer Package Manages Your Calls".

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