ETS 300 172 Ed.3 (1995)現行
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Circuit-mode basic services [ISO/IEC 11572 (2000) modified]
出版：European Telecommunications Standards Institute
專家解讀視頻
Defines the Layer 3 protocol for signalling for the support of circuit mode bearer services at the Q reference point between Private Telecommunication Network Exchanges (PTNX) connected together within a Private Telecommunication Network (PTN).
Supersedes BS ISO/IEC 11572
NBN ETS 300 172:1999 - Identical
I.S. ETS 300 172:1994 - Identical
ISO/IEC 11572:2000 - Identical
PN ETS 300 172:2005 - Identical
SS ETS 300 172 Ed. 3 (1996) - Identical
