AudioCodes Mediant 3000 User Manual page 289

User's Manual
Parameter
SIP Re-Routing Mode
[IPGroup_SIPReRoutingMode]
Enable Survivability
[IPGroup_EnableSurvivability]
Version 6.8
set 1, i.e., fallback enabled - see ''Configuring Proxy and
Registration Parameters'' on page 307).

[2] Request-URI = The device sends the SIP INVITE to the IP
address according to the received SIP Request-URI host name.
Notes:

This parameter is applicable only to the IP-to-IP application.

This parameter is applicable only to Server-type IP Groups.
Defines the routing mode after a call redirection (i.e., a 3xx SIP
response is received) or transfer (i.e., a SIP REFER request is
received).

[-1] Not Configured (Default)

[0] Standard = INVITE messages that are generated as a result
of Transfer or Redirect are sent directly to the URI, according to
the Refer-To header in the REFER message or Contact header
in the 3xx response.

[1] Proxy = Sends a new INVITE to the Proxy. This is applicable
only if a Proxy server is used and the parameter
AlwaysSendtoProxy is set to 0.

[2] Routing Table = Uses the Routing table to locate the
destination and then sends a new INVITE to this destination.
Notes:

When this parameter is set to [1] and the INVITE sent to the
Proxy fails, the device re-routes the call according to the
Standard mode [0].

When this parameter is set to [2] and the INVITE fails, the
device re-routes the call according to the Standard mode [0]. If
DNS resolution fails, the device attempts to route the call to the
Proxy. If routing to the Proxy also fails, the Redirect / Transfer
request is rejected.

When this parameter is set to [2], the XferPrefix parameter can
be used to define different routing rules for redirected calls.

This parameter is ignored if the parameter AlwaysSendToProxy
is set to 1.
Defines how the device handles registration messages and
whether Survivability mode is enabled for User-type IP Groups.

[0] Disable (default).

[1] Enable if Necessary = Survivability mode is enabled only if
the Serving IP Group is unavailable. The device saves in its
Registration database the registration messages sent by the
clients (e.g., IP phones) belonging to the User-type IP Group. If
communication with the Serving IP Group (e.g., IP-PBX) fails,
the User-type IP Group enters into Survivability mode in which
the device uses its database for routing calls between the
clients of the User-type IP Group. In Survivability mode, the
RTP packets between the clients always traverse through the
device, and new registrations can also be processed. When the
Serving IP Group is available again, the device returns to
normal mode, sending INVITE and REGISTER messages to the
Serving IP Group.

[2] Always Enable = Survivability mode is always enabled. The
communication with the Serving IP Group is always considered
as failed. The device uses its database for routing calls between
the clients of the User-type IP Group.
289
18. Control Network
Description
Mediant 3000