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| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 33.040.35 : Telephone networks
|
| Number of pages | 33 |
| Year | 2000 |
| Document history | |
| Country | International |
| Keyword | CCITT M.2140;ITU-T 2140;2140;ITU-T M.2140 |