AudioCodes Mediant 500 E-SBC, User Manual

Page: 269 / 920

User's Manual 17. Control Network
Version 6.8 269 Mediant 500 E-SBC
Parameter Description

[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.
Enable Survivability
CLI: enable-survivability
[IPGroup_EnableSurvivabilit
y] 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.

[3] Always Terminate Register = The registration messages
received from the clients are saved in the device's registration
database without forwarding them to the proxy server. Upon receipt
of the registration message, the device returns a SIP 200 OK to the
client.
Notes:

This parameter is applicable only to the IP-to-IP application.

This parameter is applicable only to User-type IP Groups.
Serving IP Group ID
CLI: serving-ip-group-id
[IPGroup_ServingIPGroup] If configured, INVITE messages initiated from the IP Group are sent to
this Serving IP Group (range 1 to 9). In other words, the INVITEs are
sent to the address defined for the Proxy Set associated with this
Serving IP Group. The Request-URI host name in the INVITE
messages are set to the value of the ‘SIP Group Name’ parameter
defined for the Serving IP Group.
Notes:

This parameter is applicable only to the IP-to-IP application.