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ITU-T X.328 General arrangements for interworking between Public Data Networks providing frame relay data transmission services and Integrated Services Digital Networks (ISDNs) for the provision of data transmission services
ITU-T X.637 Basic connection-oriented common upper layer requirements
ITU-T V.25 Automatic answering equipment and general procedures for automatic calling equipment on the general switched telephone network including procedures for disabling of echo control devices for both manually and automatically established calls
ITU-T T.174 Application Programming Interface (API) for MHEG-1
ITU-T T.85 AMD 1 T.85 (1995) Amendment 1
ITU-T T.563 Terminal characteristics for Group 4 facsimile apparatus
ITU-T F.182bis Guidelines for the support of the communication using of documents group 3 facsimile between user terminals via public networks
ITU-T F.19 Collection and dissemination of official service information
ITU-T E.454 Transmission performance metrics based on Error Correction Mode (ECM) facsimile
ITU-T X.33 Access to packet-switched data transmission services via frame relaying data transmission services
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