Systems and methods for managing a numbering plan area split with LRN routed calls
US7929683B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Jul 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To route calls in a wireless network in which an NPA split has been implemented, an intelligent router mediates NPA mismatches by modifying requests for routing information according to a rule set based on the update status of the HLR or other network element to which the routing requests are directed. According to whether the intended network element has been updated to recognize a new NPA in the directory number, the appropriate version of the directory number is included in the routing request, regardless of whether the old or the new version of the directory was actually dialed. In some embodiments, the intelligent router first modifies the routing request to include the new version of the directory number, and upon receiving an error from the intended element, resends the request with the old version. Receiving an error may prompt the intelligent router to trigger an update of the intended element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.