
PRIVATE INTEGRATED SERVICES NETWORK (PISN) - SPECIFICATION, FUNCTIONAL MODEL AND INFORMATION FLOWS - DO NOT DISTURB AND DO NOT DISTURB OVERRIDE SUPPLEMENTARY SERVICES (DND(O)SD)
出版:European Computer Manufacturers Association

專家解讀視頻
Defines the Supplementary Services Do Not Disturb (SS-DND) and Do Not Disturb Override (SS-DNDO) applying to various basic services supported by Private Integrated Services Networks (PISN). These services permit the rejection of any calls addressed to the served users PISN, together with the procedure to override this service.