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The document defines the stage 1 of the telephony 7 kHz teleservice for the european ISDN.
| Author | DIN |
|---|---|
| Editor | DIN |
| Document type | Standard |
| Format | File |
| ICS | 33.080 : Integrated Services Digital Network (ISDN)
|
| Number of pages | 20 |
| Cross references | ETS 300263 (1994-03), IDT |
| Modified by | DIN ETS 300263/A1 (1996-10)
|
| Year | 1990 |
| Document history | |
| Country | Germany |
| Keyword | 300263 |