ETSI EN 300 356-33-2001 综合业务数字网(ISDN).7号信令系统.国际接口的ISDN用户部分(ISUP)版本3.第33部分:抽象测试套件(ATS)和部分协议额外测试信息实现(PIXIT)形式规范
Integrated Service Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) Version 3 for the International Interface; Part 33: Abstract Test Suite (ATS) and Partial Protocol Implementation eXtra Information for Testing (PIXIT) Proforma Speci