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ITU-T F.82 Operational provisions to permit interworking between the international telex service and the intex service
ITU-T F.104 International leased circuit services - Customer circuit designations
ITU-T F.150 Service and operational provisions for the Intex service
ITU-T I.370 Congestion management for the ISDN frame relaying bearer service
ITU-T F.80 Basic requirements for interworking relations between the international telex service and other services
ITU-T Q.785 ISUP protocol test specification for supplementary services
ITU-T Q.83.1 Stage 2 description for call completion supplementary services : Call waiting (CW)
ITU-T Q.81.3 Stage 2 description for number identification supplementary services : Calling line identification presentation (CLIP) and calling line identification restriction (CLIR)
ITU-T Q.81.5 Stage 2 description for number identification supplementary services : Connected line identification, presentation and restriction (COLP) and (COLR)
ITU-T E.415 International network management; guidance for common channel signalling system No. 7
ITU-T E.173 Routing plan for interconnection between public land mobile networks and fixed terminal networks