Invoking circuit switched fallback in response to VoIP call setup failure
US9345060B1 · kind B1 · utility
5Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | May 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0066
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network node through which VoIP call setup signaling passes between a user equipment device (UE) and a VoIP call server detects VoIP call setup failure and responsively invokes setup of an alternate call between the UE and the called destination. For instance, a packet-gateway in an LTE network may detect VoIP call setup failure and may responsively invoke setup of a circuit-switched fallback call between the UE and the called destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.