标题: ISO/IEC 19459:2001 Single Step Call Transfer Supplementary Service [打印本页] 作者: gmt88 时间: 2013-7-8 07:26:31 标题: ISO/IEC 19459:2001 Single Step Call Transfer Supplementary Service
ISO/IEC 19459:2001(E)
First Edition
2001-05-01
Information Technology -
Telecommunications and Information Exchange Between Systems -
Private Integrated Services Network -
Specification, Functional Model and Information Flows -
Single Step Call Transfer Supplementary Service