Triple-Play Service Deployment

Chapter 3: Deploying and Troubleshooting Fiber Networks
Analyzing customer premises or Remote Central Office (RCO)
equipment outages when not all RCOs or OLTs are out of service
When some—but not all—RCOs are working, this is an indication
that the OLT and feeder sections are working properly. It further
indicates that the problem is either in the distribution network or
the RCO. In this case, the technician should go to the out-of-service
RCO to test the power levels of the link. If the wavelength power
level is correct, this indicates that this RCO has failed and should be
replaced.
If the wavelength power level is incorrect, the distribution network
may have failed, and the wavelength power level should be
measured at the terminal. If the level is correct, then the drop cable
should be changed. If changing the drop cable does not correct
the level, the technician should disconnect the connector at the
FDH of this fiber link and take an OTDR measurement from either
the FDH or the RCO.
Step Task Actions if results Actions if results
are Good are Bad
1 Measure power level at
RCOs and verify connections
Go to step 2 RCO failure. Repair RCO
2 Measure power level at
terminal and verify connections
Change the drop cable Go to step 3
3 Disconnect connector on Not applicable Identify break and
FDH and perform OTDR
measurement of distribution
repair the fiber
network as well as verify connection
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