Switched communications network to VoIP network domain communications system has gateway registered simultaneously in several domains

摘要

A switched communications network (SCN) to VoIP (Voice over Internet Protocol) network domain (DA-C) communications system has a Gateway (GW) to send parallel registration requests simultaneously to register as VoIP end point in all domains and process destination addresses (A1,2 - C1,2). Includes Independent claims for gateway equipment implementing the system.