Figure 3-105: Reasons For Alternative Routing Page - AudioCodes Mediant 600 User Manual

SIP User's Manual

To configure reasons for alternative routing:
1. Open the 'Reasons for Alternative Routing' page (Configuration tab > VoIP menu >
GW and IP to IP submenu > Routing submenu > Alternative Routing Reasons).
2. In the 'IP to Tel Reasons' group, select up to five different call failure reasons that
invoke an alternative IP-to-Tel routing.
3. In the 'Tel to IP Reasons' group, select up to five different call failure reasons that
invoke an alternative Tel-to-IP routing.
4. Click the Submit button to save your changes.
5. To save the changes to flash memory, see ''Saving Configuration'' on page 197.
3.3.2.11.3.5 Configuring Call Forward upon Busy Trunk
The 'Forward on Busy Trunk Destination' page allows you to configure forwarding of IP-to-
Tel calls (call redirection) to a different (alternative) IP destination, using SIP 3xx
responses, upon the following scenarios:

For digital 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.
This alternative destination is configured per Trunk Group.
The alternative destination can be defined as a host name (IP address with optional port
and transport type), or as a SIP Request-URI user name and host part (i.e., user@host).
For example, the below configuration forwards IP-to-Tel calls to destination user "112" at
host IP address 10.13.4.12, port 5060, using transport protocol TCP, if Trunk Group ID 2 is
unavailable:
ForwardOnBusyTrunkDest 1 = 2, 112@10.13.4.12:5060;transport=tcp;
When configured with user@host, the original destination number is replaced by the user
part.
Version 6.2

Figure 3-105: Reasons for Alternative Routing Page

169
3. Web-Based Management
February 2011