Replacing The Optical Fibers - Huawei DBS3900 WiMAX Maintenance Manual

DBS3900 WiMAX
Site Maintenance Guide (Draft)
Procedure
Step 1 Route the new Ethernet cables in the same way as the faulty Ethernet cables are routed.
Step 2 Remove the faulty Ethernet cables from the power modules. Remove the other connector from
the peer device.
Step 3 Install the new Ethernet cables.
Step 4 Attach an engineering label to each new cable. The content on each engineering label should be
the same as that on the replaced cable.
Step 5 Arrange and bind the new Ethernet cables.
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Later Measures
Check the following items after replacing the faulty Ethernet cables:
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Contact the local Huawei office to handle the faulty Ethernet cables.

7.3.2 Replacing the Optical Fibers

The optical fibers are used to transmit the optical signals between the BTS3702E and the ASN-
GW, or transmit the optical signals between two cascading BTS3702Es. When the optical fibers
of the BTS3702E are faulty, you need to replace them.
Prerequisite
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Context
Replacing the optical fibers between the BTS3702E and the ASN-GW interrupts all the services
carried by the BTS3702E. Replacing the cascading optical fiber between two BTS3702Es
interrupts all the BTS3702E services except the BTS3702E services between this optical fiber
and the ASN-GW.
Replacing the optical fibers involves removing the faulty optical fibers, installing the new optical
fibers, clearing the related transmission alarms generated on the BTS3702E, and resuming the
services. This operation takes about five minutes.
Issue 01 (2009-11-30)
The cables are correctly and securely connected.
The related transmission alarms are cleared in the alarm management system.
The quantity and type of the faulty optical fibers are confirmed, and new optical fibers are
ready.
The new fibers are in good condition.
The connections of optical fibers are recorded.
The required tools and materials are ready. The tools and materials include the ESD wrist
strap or gloves, ESD box or bag, and dust free cloth.
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7 Replacing the BTS3702E Cables
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