Zte ZXHN H168N User Manual page 26

ZXHN H168N User's Manual
No. Problem and Troubleshooting
If the VDSL2 suddenly fails to be synchronized (link
down) during application, usually the Link indicator on
the MODEM will not be ON. It is suggested to check the
following steps one by one:
1. First check the quality of incoming cables and
incoming cable connectors.
2. Install the VDSL2 MODEM correctly based on the
user guidance. Minimize the number of taps.
3. Check whether the telephone cables and VDSL2 are
in good connection or whether the telephone cables are
normal.
4. Try to disconnect the splitter and directly connect the
VDSL2 MODEM to the incoming user cable end. Ensure
the problem is not due to improper installation or
incoming user line quality. If the VDSL2 can be
synchronized again, it means that installation of the
incoming user side is improper. Please reinstall it
according to the user guide.
5. If the VDSL2 still fails to be synchronized when the
VDSL2 MODEM is connected to the incoming user
cable end, contact the operators to check whether it is
due to external line failure or MODEM failure.
6. If the splitter problem is determined, call the operator
for maintenance or replacement.
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