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ITU-T Q.860 Integrated services digital network (ISDN) and broadband integrated services digital network (B-ISDN) generic addressing and transport (GAT) protocol
ITU-T Q.1237 Extensions to Intelligent Network Capability set 3 in support of B-ISDN
ITU-T Q.765.4 Signalling system No. 7 - Application transport mechanism: Support of the generic addressing and transport protocol
ITU-T Q.2726.4 Extensions to the B-ISDN User Part - Application generated identifiers
ITU-T Q.65 The unified functional methodology for the characterization of services and network capabilities including alternative object oriented techniques
ITU-T Q.2769.1 Support of number portability information across B-ISUP