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| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 33.030 : Telecommunication services. applications 35.240.99 : IT applications in other fields |
| Modified by | ITU-T Y Supplement 20 (2012-06) |
| Year | 2009 |
| Document history | |
| Country | International |
| Keyword | CCITT Y.1901;ITU-T 1901;1901;ITU-T Y.1901 |