Telephony service in event of link failure between mobile...

Details Telephony service in event of link failure between mobile... Telephony service in event of link failure between mobile...

2008-05-06

2008-05-06

Appiah, Charles N. (Department: 2617)

Telecommunications

Radiotelephone system

Usage measurement

C455S405000, C455S407000, C455S408000, C455S409000, C455S432100, C379S114200, C379S114270, C379S114280, C379S114290, C379S126000, C379S127010

Reexamination Certificate

active

11289219

ABSTRACT:
A mobile switching center is configured with software instructions which allow it to continue to provide at least limited call termination and call origination services for mobile terminals in the event of a failure of a signaling link between the mobile switching center and a home location register and/or a signal control point (SCP) in an intelligent network. For pre-paid callers originating or terminating a call, the mobile switching center marks a call detail record as indicating that the call is a post-paid call. The call detail record is later provided to the SCP after the signaling link has been restored in order to bill the mobile terminal. In one example, the signaling link between the mobile switching center and the home location register or SCP may be a satellite link, which may go down for various reasons such as for maintenances, an unexpected failure, or the orbit of the satellite goes outside the field of reception of an antenna in the signal path.

REFERENCES:
patent: 6574464 (2003-06-01), Chen
patent: 6760418 (2004-07-01), Abbasi et al.
patent: 6785534 (2004-08-01), Ung
patent: 2002/0035479 (2002-03-01), Takae et al.
patent: 2005/0100149 (2005-05-01), Abbasi et al.
Michael S. Gallagher et al., “Mobile Telecommunications Networking With IS-41”, pp. 59-90, 161-182, McGraw-Hill (1997).

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