| Q1 management | Automatic controll | Note |
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Equipment tests |
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Power up test |
| After power is switched on |
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Self test | Self test (5.4) |
| During self test |
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| management and line |
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| connection is |
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| disconnected. |
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Line interface test |
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Network test | Loop to Line(5,3,2) |
| See Figure “Network |
loop |
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| test loop” after this |
Data coming |
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| table. |
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from the line is |
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looped back to |
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the line. |
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Port interface test |
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Local test loop | Loop to Port(5,2,3) |
| See Figure “Local test |
Data coming |
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| loop” after this table. |
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from the DTE is |
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looped back to |
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the DTE. |
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DTE
Port Interface
Line
Interface
AIS
Figure 19. Local test loop
DTE
AIS |
Port Interface
Line Interface
Figure 20. Network test loop
36 (60) | © Nokia Corporation | DN0445814 |
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