ITU-T X.121-1996
International Numbering Plan for Public Data Networks - Series X: Data Networks and Open System Communication Public Data Networks - Network Aspects (Study Group 7; 37 pp)
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ITU-T X.121-1996
Standard No.
ITU-T X.121-1996
Release Date
1996
Published By
ITU-T - International Telecommunication Union/ITU Telcommunication Sector
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