AudioCodes Mediant 500 MSBR, User Manual

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User's Manual 1194 Document #: LTRT-10375
Mediant 500 MSBR
74.10.13 Alternative Routing Parameters
The alternative routing parameters are described in the table below.
Table 74-69: Alternative Routing Parameters
Parameter Description
3xx Use Alt Route
Reasons
configure voip > sip-
definition settings > 3xx-
use-alt-route
[UseAltRouteReasonsFor3
xx]
Defines the handling of received SIP 3xx responses regarding call
redirection to listed contacts in the Contact header.

[0] No = (Default) Upon receipt of a 3xx response, the device tries
each contact, one by one, listed in the Contact headers, until a
successful destination is found. However, if a contact responds
with a 486 or 600, the device does not try to redirect the call to
next contact, and drops the call.

[1] No if 6xx = Upon receipt of a 3xx response, the device tries
each contact, one by one, listed in the Contact headers.
However, if a 6xx Global Failure response is received during this
process (e.g., 600 Busy Everywhere) the device does not try to
redirect the call to the next contact, and drops the call.

[2] Yes = Upon receipt of a 3xx response, the device redirects the
call to the first contact listed in the Contact header. If the contact
responds with a SIP response that is defined in the Reasons for
Tel-to-IP Alternative Routing table, the device tries to redirect the
call to the next contact, and so on. If a contact responds with a
response that is not configured in the table, the device does not
try to redirect the call to the next contact, and drops the call.
Redundant Routing Mode
configure voip > sip-
definition settings >
redundant-routing-m
[RedundantRoutingMode]
Determines the type of redundant routing mechanism when a call
can’t be completed using the main route.

[0] Disable = No redundant routing is used. If the call can’t be
completed using the main route (using the active Proxy or the first
matching rule in the Routing table), the call is disconnected.

[1] Routing Table = (Default) Internal routing table is used to
locate a redundant route.

[2] Proxy = Proxy list is used to locate a redundant route.
Note: To implement the Redundant Routing Mode mechanism, you
first need to configure the parameter AltRouteCauseTEL2IP
(Reasons for Alternative Routing table).
Disconnect Call With PI If
Alt
[DisconnectCallwithPIifAlt]
Defines when the device sends the IP-to-Tel call to an alternative
route (if configured) when it receives an ISDN Q.931 Disconnect
message from the Tel side.

[0] Disable = (Default) The device forwards early media to the IP
side if Disconnect includes PI, and disconnects the call when a
Release message is received. Only after the call is disconnected
does the device send the call to an alternative route.

[1] Enable = The device immediately sends the call to the
alternative route.
For more information, see Alternative Routing upon ISDN Disconnect
on page 521.
Note: The parameter is applicable only to digital interfaces.