 |
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| ISDN user-network interface structure | |||
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structure d'interface usager-reseau RNIS : 3 Phrasen in 1 Thematik |
| Kommunikation | 3 |
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| ISDN user-network interface structure | |||
|
structure d'interface usager-reseau RNIS : 3 Phrasen in 1 Thematik |
| Kommunikation | 3 |