Exchange node

Details Exchange node Exchange node

2007-11-06

2007-11-06

Al-Aubaidi, Rasha S. (Department: 2614)

Telephonic communications

Special services

Reserved call

C379S221010

Reexamination Certificate

active

10236462

ABSTRACT:
An exchange node operable to establish a backward connection comprising part of a call session, the exchange node being operable, on the occurrence of a fault in a backward direction of the exchange to transmit a pivot request to a pivot node in a backward direction of the fault, the pivot request comprising a redirection request, a call identifier, and instructions to establish a return connection between the pivot node and a nominated node.

REFERENCES:
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patent: 5805691 (1998-09-01), Dendi
patent: 5884179 (1999-03-01), Patel
patent: 5963633 (1999-10-01), Dendi
patent: 6430150 (2002-08-01), Azuma et al.
Itu-T, “Specification of Signalling System No. 7—ISDN supplementary services—Q.730,” Sep. 1997, International Telecommunication Union, Geneva, Switzerland, pp. 27-30.

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