User's Manual 496 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
• Parking mode: The device continues operating with the redundant proxy (now
active) until the next failure occurs, after which it switches to the next redundant
proxy.
• Homing mode: The device always attempts to operate with the primary proxy. In
other words, it switches back to the primary proxy whenever it's available again.
If none of the proxy servers respond, the device goes over the list again.
Note: The device assumes that all the proxy servers belonging to the Proxy Set are
synchronized with regards to registered users. Thus, when the device locates an
available proxy using the Hot Swap feature, it does not re-register the users; new
registration (refresh) is done as normal.
The following procedure describes how to configure alternative Tel-to-IP routing based on
SIP response codes through the Web. You can also configure it through ini file
(AltRouteCauseTel2Ip) or CLI (configure voip > gateway routing alt-route-cause-tel2ip).
 To configure alternative Tel-to-IP routing based on SIP response codes:
1. Configure SIP response codes (call failure reasons) that invoke alternative Tel-to-IP
routing:
a. Open the Reasons for Tel-to-IP Alternative Routing table (Setup menu >
Signaling & Media tab > Gateway folder > Routing > Alternative Routing
Reasons > Reasons for Tel > IP).
b. Click New; the following dialog box appears:
Figure 23-8: Reasons for Tel-to-IP Alternative Routing Table - Add Dialog Box
c. Configure a SIP response code for alternative routing according to the
parameters described in the table below.
d. Click Apply.
Table 23-8: Reasons for Tel-to-IP Alternative Routing Table Parameter Descriptions
Parameter Description
Index
[AltRouteCauseTel2Ip_Index]
Defines an index number for the new table row.
Note: Each row must be configured with a unique index.
Release Cause
rel-cause
[AltRouteCauseTel2Ip_ReleaseCause]
Defines a SIP response code that if received, the device
attempts to route the call to an alternative destination (if
configured).
1. Enable alternative routing based on SIP responses:
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