Triple-Play Service Deployment

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When there is a physical layer failure at a single ONT, the ONT is disconnected and a power measurement is performed.
Central Office
FDF
OLT
FDH
Splitter
Chapter 3: Deploying and Troubleshooting Fiber Networks
Step Task Objective Test Tool
1 Power level measurements Verify the levels at the OLT Selective power meter at
at OLT location with pass/fail information 1490 & 1550 nm
2 ORL measurements from OLT Verify the ORL in case of analog ORL meter
video transmission with pass/fail
information
3 Power level measurements Verify the levels at the ONT with 1310, 1490, 1550nm
at ONT location pass/fail information selective power meter
with through mode or
1490, 1550nm selective
power meter
International standards provide the minimum and maximum
values for the transmitters and receivers:
Tx Output Power
between + 9 dBm max and -7.5 dBm min, depending on standards
Rx Receiver
between -3 dBm max and -33.5 dBm min, depending on standards
(will vary according to bit rate, network class, and PON type. See ITU-T standards G.983.1 and G.984.2
for further details)
Stage 7: PON Troubleshooting
Figure 3.13 PON troubleshooting
ONT
Terminal
Terminal
Terminal
ONT
ONT
PM
OTDR
Customer
Premises
ONT