Operation Manual

Troubleshooting
52 ISDN-Controller C2 – 10 Troubleshooting
10 Troubleshooting
This chapter describes the general malfunctions and specific
error message with their most likely causes and remedies.
The error messages are grouped according to the operating
systems in which the AVM ISDN-Controller C2 can be operat-
ed.
10.1 General Malfunctions
The AVM ISDN-Controller is not detected or not initialized.
Have you installed new hardware components or changed
the configuration of existing hardware?
If you combine adapters without Plug-and-Play support (Leg-
acy) and PCI or ISA Plug-and-Play cards in one system, then
the resources (I/O addresses and IRQ levels) used by the
hardware without Plug-and-Play support should be so desig-
nated in the computer’s BIOS. Otherwise, system resources
may be allocated to more than one adapter, resulting in mal-
functions. Please see your PC or mainboard manual.
You are unable to establish an ISDN connection.
If the ISDN-Controller C2 is correctly installed but you are un-
able to establish a connection, check for the following condi-
tions:
Is the ISDN-Controller C2 firmly inserted in the PCI slot?
Is its slot plate screwed down?
Are the ISDN cable connectors firmly connected to the
AVM ISDN-Controller C2 and the ISDN socket?
Is your ISDN line active? Use another terminal device,
such as an ISDN telephone, to check it.
Is your network terminator (NT) installed correctly?
Some NTs must be connected to an electricity supply as
well as to the incoming ISDN line.
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