Arrangement for extending call-coverage across a network of node

Details Arrangement for extending call-coverage across a network of node Arrangement for extending call-coverage across a network of node

1995-03-29

1996-05-28

Hofsass, Jeffery

Telephonic communications

Special services

Anonymous party

379211, 379221, 379225, 379198, H04M 354

Patent

active

055219705

ABSTRACT:
In a network of telecommunication switches, a first switch redirects a to-be-covered call to a remote call-covering endpoint served by a second switch, without losing control over the call. The first switch accompanies connection of the call to the second switch with signaling that identifies the call as a coverage call. The second switch responds to the signaling by determining the available status of the remote covering endpoint and signaling the status back to the first switch. If the remote covering endpoint is available, the second switch takes steps to connect the call to the endpoint. If the remote covering endpoint is not available, the first switch disconnects the call from the second switch and proceeds to cover the call to an alternative covering endpoint. The net effect is that call coverage works--from a user viewpoint--identically across a network of switches as it does on a single switch.

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Excerpts from "Based on Definity.sup.R Generic 2.1, Issue 3.1 Health, Education and Safety Package, Feature Package PG-3W104", AT&T Specification No. SD 6213, May 4, 1992, pp. 11-13; 19-21; 26-27.
"G3V2 Feature Description", AT&T document No. 555-230-204, Issue 1, Jul. 1993, pp. 3-301-3-314.
"G3V2 Implementation", AT&T document No. 555-230-653, Issue 1, Jul. 1993, pp. 3-113-3-118.
"G3V2 Implementation", AT&T document No. 555-230-653, Issue 1, Jul. 1993, pp. 3-169-3-172.
"G3V3 Implementation", AT&T document No. 555-230-653B, Issue 2, Mar. 1994, pp. 413-416.
"G3V3 Implementation" AT&T document No. 555-230-653, Issue 1, Jul. 1993, (Addendum to AT&T 555-230-653), pp. 5-251-5-252; 3-432a-3-432d.

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