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Author | ITU |
---|---|
Editor | ITU |
Document type | Standard |
Format | File |
ICS | 33.040.30 : Switching and signalling systems
|
Year | 2016 |
Document history | |
Country | International |
Keyword | CCITT Q.4004;CCITT Q.4004.3;ITU-T Q.4004;ITU-T 4004;4004;ITU-T Q.4004.3 |