A COMMUNICATION SYSTEM AND METHOD FOR ACHIEVING IP CROSS-DOMAIN INTERCOMMUNICATION VIA AN EDGE MEDIA GATEWAY

摘要

A communication system for implementing IP cross-domain interconnecting via Border media Gateway (BG) includes: different IP domains, each of which includes: a Media Gateway Controller (MGC) for call control and a Media Gateway (MG) for media bearing; the communication system includes a BG for implementing interconnecting of the IP domains as well. A communication method based on the communication system, includes: a calling MG and a called MG located in different IP domains implements call switching and media stream creating with a BG under the control of MGCs in the different IP domains; and the calling MG communicates with the called MG based on the media streams created. Thus the cross-domain interconnecting between different IP domains via BGs is realized.