Zte ZXHN H168N User Manual page 11

FAQ
Why authenticated user names and
passwords cannot be re-authenticated?
What are reasons for VDSL2
synchronization failure (also referred to
link down or link establishment failure)?
accounts contain a domain name.
2.
Virtual dialup software. It is possible that sometimes the virtual dialup software is
faulty, or conflicts with other software in the operation system. In such cases, it is
suggested to re-install the dialup software or replace it with valid software.
3.
Network adapter drive program may be faulty.
4.
Did not make payment on time. Pay on time in such cases.
This problem may be due to the following reasons:
1. Your account has expired or you are a defaulting subscriber. In such
cases, pay the deficit sum.
2.
You move into a new area. As 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 logged on successfully and you cannot be re-authenticated as
the operator recognized the uniqueness of this account.
4.
The cause may also be that you failed to deregister your account timely on 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. In such cases, it is
suggested that you re-dial later. If you fail again, then contact the operator for
solution.
When the VDSL2 suddenly fails to be synchronized (link down) during application,
the cause might be the DSL indicator of the modem is not Constantly On. It is
suggested to do check in the following order:
1. Check the quality of the incoming cables and the incoming cable
connectors.
2.
Install the VDSL2 Modem correctly by following the user guide.
3.
Ensure the telephone cables are normal and are in good contact with VDSL2.
4.
Disconnect the splitter and directly connect the VDSL2 Modem to the incoming
customer cable end to ensure that the problem is not due to improper installation or
incoming customer line quality. When the VDSL2 is synchronized again, it means
that the incoming customer part is not installed properly. Re-install it according to
the User Guide.
5.
When the VDSL2 still fails to be synchronized after the VDSL2 Modem has been
connected to the incoming customer cable end, then you should contact the
operator to check whether there are external line failures/Modem failures.
6.
If it is the splitter problem, you should call the operator to perform maintenance or
replacement.
7.
The problem may also lie with the operator equipment. Call the operator to confirm
it.
8.
A long connection cable between the splitter and the VDSL2 Modem may cause
poor anti-interference performance and poor synchronization. Therefore, the
connection cable should not be too long.
Solution