Recommendation Q.921 (11/1988): ISDN user-network interface - Data link layer specification (Q26985444)
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superseded recommendation/international standard from the International Telecommunication Union
- ITU-T Q.921
- ITU-T I.441
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Recommendation Q.921 (11/1988): ISDN user-network interface - Data link layer specification |
superseded recommendation/international standard from the International Telecommunication Union |
|
Statements
ISDN user-network interface - Data link layer specification (English)
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11/1988
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25 November 1988
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118
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Identifiers
Q.921 (11/1988)
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