User's Manual 550 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
The following procedure describes how to configure alternative routing reasons for IP-to-
Tel calls through the Web interface. You can also configure it through ini file
(AltRouteCauseIP2Tel) or CLI (configure voip > gateway routing alt-route-cause-ip2tel).
To configure alternative Trunk Group routing based on Q.931 cause codes:
1. Open the Proxy & Registration page (Setup menu > Signaling & Media tab > SIP
Definitions folder > Proxy & Registration).
2. From the 'Redundant Routing Mode' drop-down list, select Routing Table so that the
device uses the IP-to-Tel Routing table for alternative routing:
Figure 24-12: Enabling Alternative Routing based on SIP Responses
3. Open the IP-to-Tel Routing table, and then configure alternative routing rules with the
same call matching characteristics as the "main" routing rule, but with different Trunk
Group destinations.
4. Configure Q.931 cause codes that invoke alternative IP-to-Tel routing:
a. Open the Reasons for IP-to-Tel Alternative Routing table (Setup menu >
Signaling & Media tab > Gateway folder > Routing > Alternative Routing
Reasons > Reasons for IP > Tel).
b. Click New; the following dialog box appears:
Figure 24-13: Reasons for IP-to-Tel Alternative Routing Table - Add Dialog Box
c. Configure a Q.931 release cause code for alternative routing according to the
parameters described in the table below.
d. Click Apply.
Table 24-9: Reasons for IP-to-Tel Alternative Routing Table Parameter Descriptions
Parameter Description
Index
[AltRouteCauseIP2Tel_Index]
Defines an index number for the new table row.
Note: Each row must be configured with a unique index.
Release Cause
rel-cause
[AltRouteCauseIP2Tel_ReleaseCause]
Defines a Q.931 release code that if received, the device
attempts to route the call to an alternative destination (if
configured).
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