
Private Integrated Services Network (pisn) - Inter-exchange Signalling Protocol - Do Not Disturb And Do Not Disturb Override Supplementary Services
出版:Nederlands Normalisatie Instituut

專家解讀視頻
Describes the Q interface Signalling protocol (QSIG) for use at the Q reference point in support of the do not disturb and do not disturb override supplementary services.
Supersedes NEN ISO/IEC 14844:1996. (09/2002)
EN 300 364 V1.3.1 (2004) - Identical