
100
V6100 and V7122 User Guide
6
Click the
Submit
button to save your changes.
7
To save the changes so they are available after a power fail, see
Save Configuration
.
Reasons for Alternative Routing
The Reasons for Alternative Routing screen includes two tables (Tel
Æ
IP and IP
Æ
Tel). Each
table enables you to define up to 4 different release reasons. If a call is released as a result
of one of these reasons, the gateway tries to find an alternative route to that call. The release
reason for IP
Æ
Tel calls is provided in Q.931 notation. The release reason for Tel
Æ
IP calls is
provided in SIP 4xx, 5xx and 6xx response codes. For Tel
Æ
IP calls an alternative IP
address, for IP
Æ
Tel calls an alternative trunk group.
See
Table 31
for information on defining an alternative IP address. See the
Table 32
for
information on defining an alternative trunk group.
You can use this table for example:
For
Tel
Æ
IP calls, when there is no response to an INVITE message (after INVITE
retransmissions), and the gateway then issues an internal 408 ‘No Response’ implicit
release reason.
For
IP
Æ
Tel calls, when the destination is busy, and release reason #17 is issued or for
other call releases that issue the default release reason (#3). See ‘DefaultReleaseCause’
in
Table 48
.
The reasons for alternative routing option for Tel
Æ
IP calls only apply when Proxy
isn’t used.
To configure the reasons for alternative routing:
1
Open the ‘Reasons for Alternative Routing’ screen (
Protocol Management
menu >
Routing Tables
submenu >
Reasons for Alternative Routing
option); the ‘Reasons for
Alternative Routing’ screen is displayed.
Figure 40
Reasons for Alternative Routing Screen
Summary of Contents for V6100
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