Operation Manual

Troubleshooting – General Malfunctions

• Are the ISDN cable connectors firmly inserted (and

screwed tightly) in the AVM ISDN-Controller? Is the

connector cable connected to in your 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 need to be connected to an electrical

outlet as well as to the incoming ISDN line.

• If your ISDN-Controller is connected to a PBX exten-

sion, have you included the outside dialing prefix

(usually ‘0’) in the numbers dialed?

• Are all the relevant services (data transmission)

available and enabled on your PBX extension?

• Did you specify the correct D-channel protocol for

your ISDN line when installing the ISDN-Controller

software?

Problems during ISDN-Controller operation:

If problems arise regularly during operation, run the

program A1 Test, located in the “AVM” program group

or in the driver software installation directory. This

program performs functional tests of the ISDN-Controller’s

individual components and displays the results.

If A1 Test reports no malfunctions in the ISDN-Controller

hardware, you should attempt a test connection to the

AVM Data Call Center (ISDN file transfer server). You may

do so using the program Connect2 (MS-DOS) or

Connect32 (Windows 95/98 and NT), which are among

the AVM ISDN-Tools included with your ISDN-Controller.

The number of the AVM Data Call Center is +49-30-399

84 300.