COMMUNICATIONS SYSTEM AND METHOD FOR ROUTING AN INCOMING CALL

摘要

The present invention relates to a communications system comprising a public service telephone network (1) comprising a signal transfer point (7), and an IP network (2) comprising a media gateway (13) and a media gateway controller (15) connected to the media gateway (13) that is identified by a point code. The signal transfer point (7) and the media gateway controller (15) are connected to each other via a signalling link, in particular an SS7 ISUP signalling channel (16). The present invention also relates to a method for routing an incoming call in such a public service telephone network (1) towards a dual mode terminal (3) that is connectabie to both the public service telephone network (1) and IP network (2).