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This Recommendation specifies a test transaction for use in other E-Series Recommendations that can help benchmark performance of transmission networks with respect to Group 3 facsimile. A test transaction composed of three pages of Recommendation T.22 Test Chart No. 4 is recommended.
| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 33.040.20 : Transmission systems
|
| Number of pages | 7 |
| Replace | ITU-T E.456 (1994-08) |
| Year | 1990 |
| Document history | ITU-T E.456 (1998-03) |
| Country | International |
| Keyword | CCITT E.456;ITU-T 456;456;ITU-T E.456 |