Configure Outgoing Calls
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XN120 Voice Over IP Card Guide
13- Configure Outgoing Calls
There are several methods of dialing SIP destinations using the XN120. All of these methods (detailed below)
use a standard dialing table to determine the IP address of the remote destination.
It should be noted that SIP calls can only be made using en-bloc dialing. This means that there will be a delay
after dialing the digits before the call is set up. This delay is called the inter-digit timer and is configured in
PRG21-01-03. This timer can be reduced but it is a system-wide setting so this will impact on other trunks in
the system. An alternative is to dial a # after the required digits. # indicates the end of the dialled digits and
this causes the call to be set up immediately.
Manually seize a VOIPU trunk (line key)
The exchange lines of each VOIPU circuit can be presented under a function key in the same way as the
analogue/BRI lines. The lines provided by each VOIPU card can be confirmed by Program 10-03-01, explained
previously.
See the XN120 Getting Started Guide for details of programming Function Keys.
Automatically seize a VOIPU trunk (dial 9)
To place an outgoing call the user can dial 9 to seize any free line.
At default dialing 9 will seize any free trunk in Trunk Group number 1. If you have changed the Trunk Group
number of the VOIPU lines (in Program 14-05-01) you will also need to include the new trunk group number
within the route used when 9 is dialed. You can assign up to 4 trunk group numbers per route by Program 14-
06-01.
This method is usually used when all calls are to be made via the VOIPU circuits.
Flexible Routing (f-route)
Many XN120 installations utilise SIP trunks for site-to-site calls and the PSTN for calls to external numbers.
Typically 9 is used as the first digit for calls to PSTN numbers and internal calls have a different numbering
scheme. To allow calls to be routed the relevant trunk automatically, F-route can be used.
F-Route configuration is outside the scope of this document. Please refer to the “XN120 Programming
Reference Manual” (991435-5) for further information.
System Interconnection Table
When calls are made via Analogue or BRI trunks, the network provider routes the call to the required
destination. The XN120 just has to send the digits to the provider and their network is configured with the
routing information to set up the call. This is essential as there are millions of possible telephone numbers that
you could dial.
Assign the Trunk Group(s)
used for each route. Up to
4 trunk groups can be
included per route.
Program 14-06-01
Assign the trunks to each
trunk group.
Program 14-05-01
Assign the Route used by
each telephone when 9 is
dialed.
You can assign a different
route per night mode
Program 21-02-01
