System and method for local handset check of the NXX local exchange to determine carrier
US8160556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Jun 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/7435
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.