Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call transfer supplementary service for the VPN b service entry point; Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification
专用综合业务网(PISN);交换间信令协议;VPN b业务入口点的呼叫转移补充业务;第1部分:测试套件结构和测试目的(TSS&TP)规范