Avaya Troubleshooting Routers Guia de Resolução de Problemas descarregar pdf (Página 96)

Troubleshooting Routers

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The Sync LED stays on when the framer is in sync with the carrier’s clock.

6. Make sure that you set the LBO appropriately.

For example, 0.0 dB is short haul (up to 133 ft).

7. Use the MCT1 built-in BERT (Bit Error Rate Test) and Line loop-up,

loop-down, and payload loopbacks for troubleshooting. (This feature is

available only with Site Manager in dynamic mode.)

Note that only one port can be in BERT mode at a time.

Payload loopbacks are available in extended super frame (ESF) line type

mode only.

8. Make sure that the clocking is set to Port1 Ext Loop or Port2 Ext Loop.

These settings are equivalent to Sync External.

The internal clocking in the MCT1 link module is the same as the internal

clocking of the T1 link module. The MCT1 Slave and Loop settings are

equivalent to the T1 master clock in the T1 link module.

9. Make sure the CRC16 (cyclic redundancy check) or CRC32 match the

carrier’s speciﬁcations.

10. Make sure that the Inter Frame Time Fill matches idles (0xFF) or ﬂags

(0x7E) with the remote end of the link.

11. Check the events from the entity DS1E1 (multichannel T1/E1 driver

service) to view the MCT1 log entry events.

MCT1 uses the wfDs1E1 MIB entries. Therefore, the entity name associated

with MCT1 is DS1E1, not MCT1.

MCT1 uses the wfSyncEntry object; T1 uses the wfLogicalLineEntry object.

12. Enter the Technician Interface loadmap <slot_no.> command and make

sure that the software loaded the munich.exe and mct1e1.exe ﬁles. If it did

not, use the Image Builder to add them to the router software image, and

transfer the image to the memory card.

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Avaya Troubleshooting Routers Guia de Resolução de Problemas Página 96