DIN ETS 300495:1998 宽带综合服务数字网(B-ISDN).7号信令系统.宽带综合服务数字网络用户部分(B-ISUP)和连接线路用2号数字用户信令系统(DSS2)之间的相互作用
Broadband Integrated Services Digital Network (B-ISDN) - Signalling system No. 7 - Interworking between Broadband ISDN User Part (B-ISUP) and Digital Subscriber Signalling system No. 2 (DSS2) (ITU-T Q.2650:1995, modified); English version ETS 300495:1997