Version 6.2 205 February 2011
SIP User's Manual 3. Web-Based Management
Parameter Description
Alternative Route Options
[IP2IPRouting_AltRouteOptions]
Determines whether this routing rule is the main routing rule
or an alternative routing rule (to the rule defined directly
above it in the table).
[0] Route Row (default) = Main routing rule - the device
first attempts to route the call to this route if the incoming
SIP dialog's input characteristics matches this rule.
[1] Alt Route Ignore Inputs = If the call cannot be routed
to the main route (Route Row), the call is routed to this
alternative route regardless of the incoming SIP dialog's
input characteristics.
[2] Alt Route Consider Inputs = If the call cannot be
routed to the main route (Route Row), the call is routed to
this alternative route only if the incoming SIP dialog
matches this routing rule's input characteristics.
Notes:
The alternative routing entry ([1] or [2]) must be defined
in the next consecutive table entry index to the Route
Row entry (i.e., directly below it). For example, if Index 4
is configured as a Route Row, Index 5 must be
configured as the alternative route.
For IP-to-IP alternative routing, configure SBC alternative
routing reasons upon receipt of 4xx, 5xx, and 6xx SIP
responses (see ''Configuring Alternative Routing
Reasons'' on page 206). However, if no respons
e, ICMP,
or a SIP 408 response is received, the device attempts to
use the alternative route even if no entries are configured
in the ‘SBC Alternative Routing Reasons’ table.
Multiple alternative route entries can be configured (e.g.,
Index 1 is the main route - Route Row - and indices 2
through 4 are configured as alternative routes).
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