T-Comfort Comfort Pro S, Mounting And Commissioning Manual

Page: 183 / 200

181
Telephony Frequently Asked Questions
Question: After restarting the
Comfort Pro S, nothing is
indicated on the displays of any
connected terminals.
It takes a short while for the Comfort Pro S to start up.
After the restart, check whether the activity LED blinks at a rate of
10s / 1s. This indicates that the Comfort Pro S 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 Comfort Pro S has not restarted properly, reset the
Comfort Pro S to its original factory setting (refer to the chapter
entitled Resetting the System Data starting on page 77).
Telephony
Question: It is not possible to
make external calls.
Check the connection between the NTBA and the Comfort Pro S.
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 Comfort Pro S is
connected to an NTBA with a multi-
terminal configuration. Why is it
not possible to establish external
connections?
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).