Telephony
Frequently Asked Questions
205
Question: After restarting the Forum 523/524, nothing is indicated on
the displays of any connected terminals.
It takes a short while for the Forum 523/524 to start up.
After the restart, check whether the activity LED blinks at a rate of 10s / 1s.
This indicates that the Forum 523/524 has started up correctly and is ready
for operation. If the activity LED is not illuminated or the LED is dark after a
short period of rhythmical blinking or the LED blinks 3 times fast in the
meantime, the restart was not successful.
If the Forum 523/524 has not restarted properly, reset the Forum 523/524
to its original factory setting (refer to the chapter entitled
Telephony
Question: It is not possible to make external calls.
Check the connection between the NTBA and the Forum 523/524.
In the
Configurator
, check whether the external S
0
ports are configured
correctly (
Telephony: Ports: S
0
menu):
– Configuration of System- / Multi-terminal access OK?
– Port is connected to the NTBA?
– Faultless Cabling?
– Terminating resistors properly configured?
Check the status of the trunks. In the Configurator, open the
System Info
:
Telephony
:
Trunks
page. For the
Trunks
used for the “External trunk” route
the
Status
indicator should display a small green hook symbol.
Question: The Forum 523/524 is connected to an NTBA with a multi-
terminal configuration. Why is it not possible to establish external connec-
tions?
With the original factory setting, an additional external S
0
port is set for an
NTBA in the communications system configuration; this additional port will be
used first to seize a trunk line.
Deactivate the corresponding S
0
port in the
Configurator
(
Telephony: Ports:
S
0
menu).