Chapter 5: Troubleshooting
100 Troubleshooting guide
An ISDN
connection
cannot be
established
The cable is not
properly
connected.
Connect the cable.
You have
connected to the
LAN interface.
Connect the cable to the
interface marked ISDN.
The cable type or
connector type is
not correct.
For information on the correct
type of connector and cable, refer
to the installation manual.
Incoming phone
calls: The call type
used for the call is
not selected in the
web interface.
Make sure the call type used for
calls to the system is selected in
the web interface. Access the web
interface and select SETTINGS >
ISDN. Then select the call type
for incoming calls.
If you are located
in an elevation area
< 45° and you have
an AVIATOR 300
or an AVIATOR
200, 3.1 kHz Audio
(Premium voice) is
not supported.
Use another service. You may still
use the ISDN interface on the
system, but only Standard voice is
available.
Problem Possible Cause Remedy
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