Communication system and method of routing calls to a terminating end point
US7702092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2005 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Nov 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/128
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of determining a telephony network node for routing a call is disclosed. The method includes receiving a call request at a service provider node, the call request including a called number to reach a called party. The method further includes sending a combined telephone number mapping (ENUM) and local number portability (LNP) query from the service provider node to a remote ENUM database, the combined ENUM/LNP query including the called number. The method further includes receiving a response to the combined ENUM/LNP query at the service provider node. The response includes one of an internet protocol address that identifies a node of an internet protocol network, a local routing number (LRN) to be used to route the call to a uniquely identified switching node of a circuit-switched network, or a return of the called number to indicate that the called number can be used to route the call to the called party.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.