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Chapter 8: Troubleshooting
• The ISDN OK LED Does Not Light
Ensure that the ISDN TA/V is powered on with its
POWER
LED alight. Verify
the connection of the line cord to the ISDN TA/V’s socket marked
LINE
, and
the ISDN service outlet. If the LED still fails to light, check your ISDN service
by plugging the ISDN TA/V into an alternate ISDN service outlet to see if it
works there. Try using an alternate line cord to connect the ISDN TA/V to
the service outlet. If all of these options fail contact your ISDN service
provider.
• Other LEDs Do Not Light During Operation
If the
TERMINAL 1
LED does not light when the communication software in
DTE interface connected computer is started (
TERMINAL 2
LED is not used
and should never light), check that the software program is correctly
configured to address the port to which the ISDN TA/V is connected.
The ISDN TA/V’s other LEDs should light and extinguish depending on
the action being taken during normal operation: if they do not light in
accordance with their function (see
Section 5.3
) contact your equipment
supplier.
• The ISDN TA/V Doesn’t Attempt to Dial
If the
TERMINAL 1
LED is lit, but the unit does not dial when instructed
to do so by your communication software, check that the dialing command
being issued by the software is set to
ATD
.
• Will Not Connect to the Remote Device
Check the connections between your ISDN TA/V, the computer and the
ISDN line. Verify that the line is working by using a telephone handset
attached to the ISDN TA/V’s phone socket to make a call. Check that the
number which you are dialing is connected to a remote device, and that the
remote device is configured to be able to answer calls.
It is possible that the remote device is not fully compatible with your ISDN
TA/V. Verify that the user of the remote device has correctly installed it, has
configured it appropriately, and is using suitable communication software.
