ETSI EN 301 907-2004 总体电信网络(CN).QSIG和H.323间的信令互通.呼叫转移补充业务(版本1.1.1).ISO/IEC 21410(2001),修正本
Corporate telecommunication Networks (CN); Signalling interworking between QSIG and H.323; Call transfer supplementary service (V1.1.1; ISO/IEC 21410 (2001), modified)