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.
This problem may be due to the following reasons:
1. Your account has expired or you are a defaulting subscriber (please pay the deficit sum).
2. You move into a new area. Because the account and the path PVC are bundled by some
operators, your previous account and password cannot be authenticated after you changed your
path.
3. One of your accounts has logged on successfully. Therefore, you will fail to be re-authenticated
because the operator has recognized the uniqueness of this account
4. Maybe you failed to deregister your account timely in the Broadband Access Server (BAS)
when you were off line abnormally, so the BAS or the billing system deemed that your account
was still available. Therefore, your re-login may fail because of uniqueness of your account You
are suggested to redial up later. If still failing, contact the operator for a solution.
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