Page 54
VoIP gateway IP400 version 5.01
Fig. 11 ISDN terminal on the IP 400
The configuration varies depending on whether the devices to be connected have
their own power supply or not. Telephones typically have no power supply of their
own and are therefore supplied via the ISDN-line.
• In the configuration applet, call up
ISDN interfaces > TEL1
or the connec-
tion to the ISDN equipment.
• Check the
NT
box.
• Check the
Power
box, if a terminal to be connected needs power from the
ISDN-line.
• Check the
100 Ohm Termination
box.
• Uncheck the
Permanent Activation
box.
• Uncheck the
Point to Point
box.
• Remove
Disable overlap receive
.
• Remove
Suppress sending of HLC
and
Suppress sending of FTY
(see
section “Suppression of specific protocol elements” from page 50).
• In the
D-Channel Protocol
field, set the protocol to
EDSS1
(see section
“The signalling protocols” from page 49).
Tip
If you are uncertain whether your devices require power or not, simply enable
the power feature anyway.
ISDN
terminal
tel1 or tel2
BRI line
IP 400