Method and system for establishing paths between end points in packet data networks
US7313145B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2003 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Nov 25, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/2521
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention provides a method of determining the degree of network address translation (NAT) traversing required to dynamically establish a bearer path within or out of a Service Provider hosted Enterprise VoIP VPN. Each media end point in the Enterprise IP VPN has associated with it a chain of the identities of a hierarchy of NAT functions behind which it resides with respect to an SP public IP network over which the Enterprise VoIP is hosted. By comparing the respective NAT function identity chains for an originating end point and a destination end point, a call agent can determine what, if any, NAT functions need to be traversed in the bearer path between the end points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.