Triple-Play Service Deployment

Chapter 3: Deploying and Troubleshooting Fiber Networks
Step Task Objective Test Tool
1 Check connectors on jumpers, Verify connector quality Fiber inspection scope
test equipment, fiber links
2 Continuity check/Insertion Acceptance test of the Source/Power meter, ORL,
loss / ORL testing of the distribution cable or OTDR
distribution cable
For the overall link (feeder and distribution), the international
standards provide the minimum design requirements as outlined
below.
Network Class Min Optical Budget Max Optical Budget Min ORL value
ITU-G.982 ITU-G.982 ITU-G.982 ITU-G.983/984
Class A 5 dB 20 dB 32 dB, all port terminated
(20 dB otherwise)
Class B 10 dB 25 dB 32 dB, all port terminated
(20 dB otherwise)
Class C 15 dB 30 dB 32 dB, all port terminated
(20 dB otherwise)
Stage 6: PON Equipment Installation and Testing
OLT and ONT installation are two of the key steps in building the
PON infrastructure. OLTs are installed at the central office, while
ONTs are installed at customer premises. ONUs are typically
installed at remote central offices. As described in Stage 1, the drop
cable connecting the terminal and the ONT is installed at the
customer premises using either aerial or underground methods
depending upon greenfield or brownfield application. The ONU is
connected to the customer premises using copper cabling.
The drop cable is usually pre-connectorized to expedite installation.
If the connector caps remain in tact, no further testing during
installation is required.With the drop cable installed, the technician
can connect the drop at the terminal, then, at the FDH, connect the
specific fiber for the customer. In some cases the drop cable may
not be pre-connectorized.Here,connectors are added and tested in
the field.
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