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SmartNode 4940 Getting Started Guide | C • Cabling |
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T1 PRI
The T1 PRI is usually connected to a PBX or
WARNING
WARNING
Hazardous network voltages are present in the PRI cables. If you detach the cable, detach the end away from the SmartNode or interface card first to avoid possible electric shock. Network hazardous voltages may be present on the device in the area of the PRI port, regardless of when power is turned OFF.
To prevent damage to the system, make certain you connect the PRI cable to the PRI port only and not to any other
0/3
0/2
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| 0/1 |
T1 | /E1 | 0/0 |
ETH | 0/1 |
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Reset | C |
| onsole |
| RS- |
| 232 |
NT
Figure 12. Connecting a T1 PRI port to an NT device
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RX Ring | 1 | 1 | RX Ring |
RX Tip | 2 | 2 | RX Tip |
RX Shield | 3 | 3 | RX Shield |
TX Ring | 4 | 4 | TX Ring |
TX Tip | 5 | 5 | TX Tip |
TX Shield | 6 | 6 | TX Shield |
N/C | 7 | 7 | N/C |
N/C | 8 | 8 | N/C |
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| *N/C = No connection* |
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Figure 13. T1 PRI crossover cable
T1 PRI | 51 |