Interworking between session initiation protocol (SIP) and bearer independent call control protocol (BICC) or ISDN user part (ISUP): Abstract test suite (ATS) and partial protocol implementation extra information for testing (PIXIT) for profiles A and B
会话启动协议(SIP)和承载独立呼叫控制协议(BICC)或ISDN用户部分(ISUP)之间的互通:配置文件A和B的抽象测试套件(ATS)和部分协议执行额外测试信息(PIXIT)