Reliable call progress indication for SIP
US7436946B1 · kind B1 · utility
1Cited by
2References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2003 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jan 31, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S379/90
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for communicating with a device in an unreliable messaging environment is provided. The method comprises: repeatedly sending an invite signal to the device, wherein the invite signal is sent until a ringing response is received from the device; receiving a ringing response from the device in response to the device receiving the invite signal; and ceasing to send the invite signal to the device when the ringing response is received from the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.