ITU-T I.113-1989 Vocabulary of Terms for Broadband Aspects of ISDN - Integrated Services Digital Network (ISDN) - General Structure and Service Capabilities (Study Group XVIII) 10 pp
ITU-T - International Telecommunication Union/ITU Telcommunication Sector
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ITU-T I.113-1989
ITU-T I.113-1989 history
1989ITU-T I.113-1989 Vocabulary of Terms for Broadband Aspects of ISDN - Integrated Services Digital Network (ISDN) - General Structure and Service Capabilities (Study Group XVIII) 10 pp