System and method for local handset check of the NXX local exchange to determine carrier
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United States of America Patent
Stats
-
Apr 17, 2012
Grant Date -
Oct 14, 2010
app pub date -
Apr 13, 2009
filing date -
Apr 13, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Systems and method for determining if a network of a call page has been ported to another network. The mobile communications network associated with a received call page is determined based on caller identification (CID) included in the call page and information of local exchange codes and associated mobile carriers stored in local memory of the mobile device. The method determines if the mobile communications network associated with the received call page is valid with regard to an exceptions list. Next it is determined if the determined mobile communications network associated with the call page matches the mobile communications network associated with the mobile device based on the validity determination. The exceptions list identifies phone numbers that have been ported to a mobile communications network that is different that the determined network.
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