
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Inter-exchange signalling protocol. Advice of charge supplementary services
出版:British Standards Institution

专家解读视频
97 [15/12/1997]
© British Standards Institution 2013
General notes:
Replaced by EN 301264 Version 1.1.1:1998.
ISO/IEC 15050 : 2003(R2015) - Identical
ISO/IEC 15050:1997 - Identical
ISO/IEC 15050:2003 - Identical