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ITU-T I.258.2 Mobility and modification supplementary services : In-call modification (IM)
ITU-T Q.2010 Broadband integrated services digital network overview - Signalling capability set 1, release 1
ITU-T E.104 International telephone directory assistance service and public access
ITU-T E.109 International billed number screening procedures for collect and third-party calling
ITU-T Q.2140 B-ISDN ATM adaptation layer - Service specific coordination function for signalling at the network node interface (SSCF at NNI)
ITU-T Q.2951 Stage 3 description for number identification supplementary services using B-ISDN Digital Subscriber Signalling System No. 2 (DSS 2) - Basic call - Clause 1: Direct Dialling-In (DDI), Clause 2: Multiple Subscriber Number (MSN), Clause 3: Calling Line Identification Presentation (CLIP), Clause 4: Calling Line Identification...
ITU-T Q.76 Service procedures for universal personal telecommunication - Functional modelling and information flows
ITU-T Q.2931 Digital Subscriber Signalling System No. 2 - User-Network Interface (UNI) layer 3 specification for basic call/connection control
ITU-T Q.923 Specification of a synchronization and coordination function for the provision of the OSI connection-mode network service in an ISDN environment
ITU-T T.90 AMD 1 T.90 (1992) Amendment 1
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