Internet protocol address selection in session initiation protocol communications
US10728207B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2017 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Feb 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/686
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Examples disclosed herein provide methods and systems for selecting Internet Protocol addresses for Session Initiation Protocol (SIP) communications. In at least one implementation, a method of operating a communication network utilizing a session initiation protocol (SIP) is provided. The method performed within a second communication device includes receiving a SIP invite from a first communication device, and determining a source IP address for the second communication device, using an IP address for a third communication device as a destination address within a source address selection algorithm (SASA) function. The method further includes adding a Via header within the SIP invite to include the SASA determined source IP address for the second communication device, adding a Record-Route header within the SIP invite to include the SASA determined source IP address for the second communication device, and transferring the modified SIP invite to the third communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.