Method for switching session of IMS network and EATF
US9467485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2013 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Jul 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/1096
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for switching a session of an IP Multimedia Subsystem (IMS) network and an Emergency Access Transfer Function (EATF) entity are disclosed. The method includes: the EATF entity anchoring a call sent by a network element in a call initiation domain, and routing the call to an Emergency-Call Session Control Function (E-CSCF); the EATF entity receiving call transfer invite message sent by a network element in a call termination domain; and if identifying that the call transfer invite message is an invite message inviting to perform transfer of the call, the EATF entity performing media negotiation, and sending a response message carrying media information to the network element in the call termination domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.