Patent ID: 7751415
Filing Date: 2010-07-06
Classification: H04L,H04M,H04W

Abstract:
1. A telecommunication system comprising: a packet-switched multimedia terminal coupled to a first node for packet-switched multimedia sessions and to a first server for exchanging multimedia signalling information for said packet-switched multimedia sessions; a terminating unit coupled to a second node and to a second server; a gateway coupled to said first node and to said first server and to a switch; wherein the packet-switched multimedia terminal further comprises a transmitter for transmitting a transferral message to said first server, wherein the transferral message initiates a process for transferring at least a part of at least one packet-switched multimedia session between said packet-switched multimedia terminal and said first node to a circuit-switched call between said gateway and a circuit-switched terminal via said switch; and wherein the transferral message is a Session Initiation Protocol REFER message comprising a predefined Uniform Resource Locator, with said first server further comprising a converter for converting said predefined Uniform Resource Locator into a call number defining said circuit-switched terminal.