Route re-query scheme in communication networks
US7768996B1 · kind B1 · utility
4Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2003 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Apr 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2201/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for re-querying for routing information is disclosed. The method transmits an initial admission query to a gatekeeper or a request for routing information and receives an admission confirmation or routing information response with a destination address. The method then tries to establish a connection with the destination address. Upon reception of a call failure message including a failure cause, the method, optionally, increments a counter and transmits a re-query to the gatekeeper or other routing entity, and the re-query includes the failure cause and, optionally, a value of the query counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.