GRX Application in GPRS International Roaming Services

This article gives awhole introduction about the GPRS network architecture and the traditional inter-PLMN connec- tion method.At the same time,it illustrates the advantages about GRX interconnection and the role GRX plays in interconnection,net- work services,traffic monitor and service management.In the end,the article emphases the GRX's practice in international GPRS data roaming in ChinaUnicom.