标题: ISO/IEC 20113-2004 Information technology — Telecommunications and information [打印本页] 作者: 2013 时间: 2013-3-23 23:41:04 标题: ISO/IEC 20113-2004 Information technology — Telecommunications and information
ISO/IEC 20113-2004 Information technology — Telecommunications and information exchange between systems — Private
Integrated Services Network — Specification, functional model and information flows — Make call request supplementary service
