DIVA T/A ISDN Modem User’s Guide ◆ Page 129
ISDN Line Termination
In Australia, if you are installing a DIVAT/A with an S/T interface, you must correctly s et up
ISDN line termination to ensure the proper operation of your equipment.
To determine your termination requirements, see page130.
About Setting ISDN Line Termination
To set ISDN line termination, you may have to install a terminating resistor or set a switch on
the back of the DIVAT/A, depending on the model. To learn how to set ISDN line termination
for your particular device, refer to the diagram below.
Installing the resistor
If termination is required and your DIVAT/A does not have a 100 ohm ISDN Line Termination
Switch, install the 100 ohm terminating resistor that is included in your package as follows:
1Insert the RJ-45 end of the ISDN cable into the resistor.
2Insert the resistor into the ISDN port on the back of your DIVAT/A.
3Insert the other end of your ISDN cable into your NT1.
Note: The terminating resistor can also be plugged into the other end of the ISDN cable,
then plugged into the NT1 (instead of into the back of the DIVAT/A). The resistor will work as
long as it is between the DIVAT/A and the NT1; do not place the resistor between the NT1
and the U interface.
100 ohm ISDN LineTermination Switch
(external terminating resistor not needed)
ISDN Phone 1 Phone 2 Serial Reset
On
Off
100
ISDN
Reset
Phone 1 Phone 2
Serial
No ISDN LineTermination Switch
(external terminating resistor provided)
Terminating
Resistor ISDN
Cable