ZTE ZXDSL 831 User Manual
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ZXDSL 831/831B/831II/831BII User’s Manual
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5
Password verification failure
MODEM synchronization and connection are normal. However, sometimes the
password fails to be verified.
1. Note that the account and password are case sensitive and some accounts contain a
domain name.
2. Virtual dialup software. It is possible that sometimes the virtual dialup software is
faulty, or conflict with other software in the operating system. At this time, you are
suggested to reinstall the dialup software or replace it with other software.
3. Network adapter drive program problem.
4. In arrears of fees. Pay the fee timely in this case.
6
What are reasons for ADSL synchronization failure (also referred to link down
or link establishment failure)?
If the ADSL suddenly fails to be synchronized (link down) during application,
usually the DSL indicator of the MODEM will not be solid on. You are suggested for
checkup in the following sequence:
1. First check the quality of incoming cables and incoming cable connectors.
2. Install the ADSL Modem correctly based on the user guide, to minimize the
number of taps.
3. Check whether the telephone cables and ADSL are in good contact or whether the
telephone cables are normal.
4. Try to disconnect the splitter and directly connect the ADSL Modem to the
incoming customer cable end to ensure that the problem is not due to improper
installation or incoming customer line quality. If the ADSL can be synchronized
again, it means that installation of the incoming customer part is improper. Please
reinstall it according to the user guide.
5. If the ADSL still fails to be synchronized after the ADSL Modem has been
connected to the incoming customer 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 operators for maintenance or
replacement.
7. The problem may be also due to the end office equipment fault of the operator.
Call the operator to confirm it.
8. Too long connection cable between the splitter and ADSL Modem may cause poor
anti-interference performance and synchronization difficulty. Therefore, the
connection cable should not be too long.