Method, system and gateway device for enabling interworking between IP and CS networks
US7898990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2003 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Jan 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/0093
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, system and gateway device enables interworking between an IP-based network and a circuit-switched network. A first address information of a first connection end located in the circuit-switched network is routed in a trigger message from the IP-based network to a gateway control function. The first and second call legs are established in parallel towards the first connection end based on the first address information, and towards a second connection end located in the IP-based network based on a second address information obtained from the trigger message. A single connection between the two connection ends is then established by connecting the first and second call legs. Thereby, IP-based signaling functionality can be used to add capability for subscribers located in the CS domain to be invited into conferences or calls with subscribers located in an IP-based domain, e.g. the IMS domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.