Figure 3-98: Forward On Busy Trunk Destination - AudioCodes Mediant 1000 User Manual

3.3.5.10.8 Configuring Call Forward upon Busy Trunk
The 'Forward on Busy Trunk Destination' page allows you to configure forwarding of IP-to-
Tel calls to a different (alternative) IP destination, using SIP 3xx response, upon the
following scenarios:

For digital PSTN interfaces: If a Trunk Group has no free channels (i.e., "busy" Trunk
Group).

For analog interfaces: if an unavailable FXS/FXO Trunk Group exists. This feature can
be used, for example, to forward the call to another FXS/FXO device.
The alternative destination (i.e., IP address, port and transport type) is configured per Trunk
Group.
The device forwards calls using this table only if no alternative IP-to-Tel routing has been
configured or alternative routing fails, and one of the following reasons (included in the SIP
Diversion header of 3xx messages) exists:

For digital PSTN interfaces: "out-of-service" - all trunks are unavailable/disconnected

"unavailable":
•
For digital PSTN interfaces: All trunks are busy or unavailable
•
For analog interfaces: All FXS/FXO lines pertaining to a Trunk Group are busy or
unavailable
Note:

To configure the Forward on Busy Trunk Destination table:
1. Open the 'Forward on Busy Trunk Destination' page (Configuration tab > Protocol
Configuration menu > Routing Tables submenu > Forward on Busy Trunk Dest
page item).
Figure 3-98: Forward on Busy Trunk Destination Page
The figure above includes a configuration entry that forwards IP-to-Tel calls destined
for Trunk Group ID 2 to destination IP address 10.13.5.67.
2. Click the Submit
3. To save the changes so they are available after a power fail, refer to ''
Configuration''
SIP User's Manual
You can also configure the Forward on Busy Trunk Destination table using
the ini file parameter table ForwardOnBusyTrunkDest.
button to save your changes.
on page 199 .
170
Mediant 600 & Mediant 1000
Saving
Document #: LTRT-83306