
PRIVATE TELECOMMUNICATION NETWORK (PTN); INTER-EXCHANGE SIGNALLING PROTOCOL - CALL INTRUSION SUPPLEMENTARY SERVICE
出版:European Telecommunications Standards Institute

专家解读视频
Intrusion supplementary service (SS-CI) at the Q reference point between Private Telecommunication Network Exchanges (PTNXs) connected together within a Private Telecommunication Network (PTN)
PN ETS 300 426 : 2005 - Identical
NBN ETS 300 426 : 1996 - Identical
DIN ETS 300426 : 1996 - Identical
DIN ETS 300426 : 1996 - Identical