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The document deals with the implementation conformance statement proformas for the dual tone multi frequency device and the authenticatings entity.
| Author | DIN |
|---|---|
| Editor | DIN |
| Document type | Standard |
| Format | File |
| ICS | 33.040.35 : Telephone networks
|
| Number of pages | 14 |
| Cross references | ETS 300391-2 (1995-08), IDT |
| Year | 1990 |
| Document history | |
| Country | Germany |
| Keyword | DIN ETS 300391;300391 |