Configuring the ISDN gateway
12
7
Complete the settings for ISDN Port 1 as required by your network, referring to
the online help for further information. Note that all ISDN ports on the ISDN
gateway are enabled by default.
8
Click
Apply changes
to save your configuration changes to the ISDN port.
9
Complete the settings for other ISDN ports as required by your network,
referring to the online help for further information.
Step four: Configure an H.323 gatekeeper
If you have H.323 endpoints, using an H.323 gatekeeper can make it easier for callers
to make their call. You can configure the ISDN gateway to use an external gatekeeper
or its own built-in gatekeeper.
To configure the use of an H.323 gatekeeper, go to
Settings > H.323
. Typically you
may want to add a Dial plan prefix for voice calls (for example, 9) and another for
video calls (for example, 8).
For more information refer to the online help topic: “Configuring gatekeeper
settings”.
Step five: Configure the dial plan
The default behavior of the ISDN gateway is to reject all calls. You must configure a
dial plan to allow permitted calls to be placed.
Below are some simple configurations for dial plan rules. Refer to the online help for
more information on dial plan rule syntax.
IP to ISDN dial plan setup
This example allows IP codecs to dial (via a gatekeeper) the ‘phone number of the
destination endpoint, using a prefix of 9 for audio calls and 8 for video calls. It
assumes that you require both video and voice calls to be made from your IP network
to ISDN and that you have set up dial plan prefixes 8 and 9 on the ISDN gateway’s
Settings > H.323
page.
1
In the web interface, go to
Dial plan > IP to ISDN
and click
Add rule
.
2
For
Condition
, select
Called number matches
and enter the correct match for
example 9(D*).
3
For
Action
, select
Call this number
and enter $1.
4
For
Call type
, select
Telephone
.
