Interquartz 9826N - Manual (Page 6)

5
5. Maintenance and Problem Solving
Your telephone is a precision electronic instrument. Avoid rough handling
and extreme temperatures.
Use a mild detergent and a damp cloth when cleaning. Never use a stronger
cleaner.
If your telephone does not appear to be working correctly, please check
the following :
No dial tone - Is phone cord properly connected to the wall socket ?
Will not ring - ringer switch is set to off
- REN number may exceed 4, for all telephones
connected to the line. Disconnect a phone until the
number is below 4.
If there are still problems, and you have more than one telephone :
Remove the "problem" telephone. Insert another telephone and check
that it works. If "yes" then the "problem" telephone is possibly faulty. If not,
then you may have a faulty line. Try using the other socket and see which
telephones work. If you do have a faulty line then you should contact your
network supplier.
You should however be aware that if you request them to repair a fault that
is found not to be theirs, then they are entitled to charge you for a visit.
In the event that you still have problems then you should consult your
supplier.