Network address translation (NAT) traversal equipment for signal messages conforming to the SIP protocol by redundancy of address information
US8233484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2007 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Aug 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/604
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method of setting up a communication session (fm) between a calling communication client (C1) and a called communication client (C2), through a communication network (SN1, SN, SN2) comprising at least one address translation equipment (NAT1, NAT2). It comprises steps for transmission of signal messages (fs), transiting through address translation equipment and enabling interchange of physical addresses of communication clients to set up the communication session. This method is characterized in that at least one client transmits at least one signal message containing a physical address in a first location, and coded information containing this particular physical address in a distinct second location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.