gmt88 发表于 2013-7-7 02:56:19

ISO/IEC 17309:2000 Mapping Functions for the Employment of a Circuit Mode Basic

ISO/IEC 17309:2000(E)
First Edition
2000-09-15
Information Technology -
Telecommunications and Information Exchange Between Systems -
Private Integrated Services Network -
Mapping Functions for the Employment of a Circuit Mode Basic Service and the Supplementary Service User-To-User Signalling as a Pair of On-Demand Inter-PINX Connections

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21319817 发表于 2013-8-29 15:42:57

:lol
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