Apparatus and method of providing a history of calling numbers

Details Apparatus and method of providing a history of calling numbers Apparatus and method of providing a history of calling numbers

2002-09-11

2008-10-07

Eng, George (Department: 2617)

Telecommunications

Radiotelephone system

Message storage or retrieval

C455S412200, C455S433000, C455S466000

Reexamination Certificate

active

07433679

ABSTRACT:
The present invention relates to apparatus and method of providing a history of failed calls for a subscriber who is targeted by the failed calls. In the present invention, when an exchanger can not route a call to a target subscriber it notifies an HLR (Home Location Register) of call routing failure. Then, the HLR sends information about the failed call, which includes the called and the calling number, and call originating time (or call receiving time), to a call control system. The call control system adds the received failed-call information to a calling history for the called number. Afterwards, when the called number is accessible the call control system provides a subscriber of the called number with the calling history, whereby the subscriber can know all of calling numbers that requested to make connections with him or her while he or she was not able to communicate with a mobile network.

REFERENCES:
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patent: 6236853 (2001-05-01), Mee et al.
patent: 6285875 (2001-09-01), Alajoki et al.
patent: 6311057 (2001-10-01), Barvesten
patent: 6438140 (2002-08-01), Jungers et al.
patent: 6625437 (2003-09-01), Jampolsky et al.
patent: 6826397 (2004-11-01), Vasa
patent: 2005/0032543 (2005-02-01), Adkins

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