ETS 300 425 Ed.1 (1995)现行
Private Integrated Services Network (PISN); Specification, functional model and information flows; Call intrusion supplementary service [ISO/IEC 14845 (1996) modified]
出版：European Telecommunications Standards Institute
专家解读视频
Describes the Call Intrusion supplementary service (SS-CI), whichis applicable to basic services supported by Private Telecommunication Networks (PTNs). Basic services are specified in ETS 300 171. This is a supplementary service which enables the user to establish communication with a busy called user (user B) by breaking into an established call between user B and a thirduser (user C).
SS ETS 300 425:1995 - Identical
PN ETS 300 425:2005 - Identical
NBN ETS 300 425:1996 - Identical
DIN ETS 300425 (1996-04) - Identical
