ETSI PRETS 300 482-1995 综合业务数字网(ISDN).ISDN-全球移动通信系统(GSM)公共陆地移动网(PLMN)信令接口.测试规范
Integrated Services Digital Network (ISDN); ISDN - Global System for Mobile Communications (GSM) Public Land Mobile Network (PLMN) Signalling Interface; Test Specification