Method and communication system for setting up an H.323 or SIP connection from a source network to a connection destination which is external to the source network

摘要

An H.323 or SIP connection is set up from a source network (LAN1) via at least one packet-oriented transit network (WAN1, WAN2) to a connection destination (EG2) which is external to the source network. The connection is set up via gateway devices (GW1, . . . , GW4) which are cascaded between networks and respectively manage only access to gateway devices and communication devices which are logically directly adjacent. In this context, H.323 connection setup signaling (SET1, . . . , SET4) is conveyed, using logical address information (030-222) or sections thereof (030, 030-2), from gateway device to gateway device until it reaches the connection destination (EG2).