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ISO/IEC 15991:2003 EN
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Call Priority Interruption and Call Priority Interruption Protection supplementary services
现行
发布日期 :
2003-03-21
实施日期 :
ISO/IEC 15992:2003 EN
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call Priority Interruption and Call Priority Interruption Protection supplementary services
现行
发布日期 :
2003-03-24
实施日期 :