External application gateway
US8599879B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2005 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jul 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/2503
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A telecommunications system uses an external application gateway (EAG) in communication with a network call control element and external server systems for controlling calls. The telecommunications system further includes a session initiation protocol (SIP) proxy, an intelligent application proxy, and an intelligent application call control. The EAG communicates with a network call control element of a packet network and a third party application server for controlling calls. The external application gateway controls the flow of information between the network call control element and the third party application server, performing such functions as modifying or stripping out network-proprietary information with delivery of the modified messages to the third party application server, keeping track of call state information and associating messages with specific calls, verifying that the third party application server is making only allowed requests, and limiting traffic volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.