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| datelkredsløb | |||
| datakanal (A separate channel of an Integrated Services Digital Network (ISDN) line that is used for ISDN signaling. For ISDN Basic Rate Interface (BRI), the D-channel is 16 kilobits per second (Kbps). For ISDN Primary Rate Interface (PRI), the D-channel is 64 Kbps) | |||
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data-channel : 24 do fraz, 5 tematyki |
| Elektronika | 10 |
| Komunikacja | 4 |
| Microsoftu | 1 |
| Technologia informacyjna | 8 |
| Transport | 1 |