Telecommunications – Radiotelephone system – Special service
Reexamination Certificate
2006-02-07
2006-02-07
Appiah, Charles N. (Department: 2686)
Telecommunications
Radiotelephone system
Special service
C455S432100, C455S445000
Reexamination Certificate
active
06996396
ABSTRACT:
A method for use in forwarding a call intended for a GSM-roaming subscriber unit (106) is performed by a mobility gateway (102) connected between an ANSI-41 network and a GSM network. The method includes associating the roaming subscriber unit (106) with one of a plurality of temporary transfer-to telephone numbers homed on a mobile switching center (118). The temporary transfer-to telephone number is used for an intermediate and temporary transfer of a call intended for the roaming subscriber unit (106) in response to some predetermined condition, such as a busy indication or expiration of time. This number is used to facilitate both the forwarding of the call to a voice mail system (116) and the tearing down of international long-distance connections.
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Appiah Charles N.
Cingular Wireless II LLC
Knowlton, Esq. Paul E.
Ly Nghi H.
Parks Knowlton LLC
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