Operation Manual
Assistance from AVM Support
FRITZ! – 9 Information, Updates and Support 65
Which operating system are you using (e.g., Windows
XP?)
Which D-channel protocol is being used?
Is your ISDN-Controller operating on a PBX line?
At what step of the installation or in which FRITZ! appli-
cation does an error message appear? What is the exact
wording of the message?
Once you have put together all of this information, please fax
them to AVM Support. Our support team will do everything it
can to assist you in resolving the problem.










