Triple-Play Service Deployment

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Chapter 5: Troubleshooting the Premises Wiring
In addition to loss, latency, and jitter emanating from the core
network, a range of in-home issues, including phone line
problems, Ethernet wiring mis-configuration or faulty termination,
poor coax cabling integrity, and noise impairments can combine
and compound to degrade the customer’s triple-play QoE. The
service provider must put a testing plan into place to ensure that
technicians pay careful attention to testing the premises network.
The plan must facilitate a fast and easy way to identify and resolve
these issues at the time of service deployment in order to avoid
costly return trouble calls.
Phone line issues
Phone lines (twisted pair) in the premises often carry both voice
service and data services using HPNA. In the FTTH architecture,
the ONT or RG emulates the POTS network by providing all of the
battery voltages, ring tones, and dial tones that were provided by
the central office in the past. Consequently, troubleshooting VoIP
carried over the phone wiring is very similar to troubleshooting
POTS (see Chapter 8, Troubleshooting VoIP). Common errors
affecting in-home wiring installations include opens, shorts,
crossed wires, or broken wires. In-home technicians require tools
that can help identify these and other problems quickly. For
troubleshooting difficult phone wiring problems in the premises,
the same techniques that are used on the local loop can be used.
These are described in Chapter 4.