AudioCodes Mediant 800B MSBR User Manual page 273

User's Manual
Parameter
Description
CLI: description
[IPGroup_Description]
Proxy Set ID
CLI: proxy-set-id
[IPGroup_ProxySetId]
Version 6.8
request sent by a user of this IP Group is proxied to the
Serving IP Group. For registrations, the device updates
its internal database with the AOR and contacts of the
users.
Digest authentication using SIP 401/407 responses (if
needed) is performed by the Serving IP Group. The
device forwards these responses directly to the SIP
users.
To route a call to a registered user, a rule must be
configured in the Outbound IP Routing table or SBC IP-
to-IP Routing table. The device searches the dynamic
database (by using the request URI) for an entry that
matches a registered AOR or Contact. Once an entry is
found, the IP destination is obtained from this entry, and
a SIP request is sent to the destination.
The device also supports NAT traversal for the SIP
clients located behind NAT. In this case, the device must
be defined with a global IP address.

[2] Gateway = This is applicable only to the SBC
application in scenarios where the device receives
requests to and from a gateway representing multiple
users. This IP Group type is necessary as the other IP
Group types are not suitable:

The IP Group cannot be defined as a Server since
its destination address is unknown during
configuration.

The IP Group cannot be defined as a User since the
SIP Contact header of the incoming REGISTER
does not represent a specific user. The Request-
URI user part can change and therefore, the device
is unable to identify an already registered user and
therefore, adds an additional record to the
database.
The IP address of the Gateway IP Group is obtained
dynamically from the host part of the Contact header in
the REGISTER request received from the IP Group.
Therefore, routing to this IP Group is possible only once
a REGISTER request is received. If a REGISTER
refresh request arrives, the device updates the new
location (i.e., IP address) of the IP Group. If the
REGISTER fails, no update is performed. If an UN-
REGISTER request arrives, the IP address associated
with the IP Group is deleted and therefore, no routing to
the IP Group is done.
Note: This field is applicable only to the SBC and IP-to-IP
application.
Defines a brief description for the IP Group.
The valid value is a string of up to 29 characters. The
default is an empty field.
Assigns a Proxy Set ID to the IP Group. All INVITE
messages destined to this IP Group are sent to the IP
address configured for the Proxy Set.
Notes:
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21. Control Network
Description
Mediant 800B MSBR