AudioCodes Mediant 4000 SBC User Manual page 381

CHAPTER 18 Core Entities
'Name'
name
[IPGroup_Name]
'Topology Location'
topology-location
[IPGroup_TopologyLocation]
'Type'
type
[IPGroup_Type]
Parameter Description
Defines a descriptive name, which is used when
associating the row in other tables.
The valid value is a string of up to 40 characters.
Note:
■ Each row must be configured with a unique name.
■ The parameter value cannot contain a forward slash
(/).
Defines the display location of the IP Group in the
Topology view of the Web interface.
■ [0] Down = (Default) The IP Group element is
displayed on the lower border of the view.
■ [1] Up = The IP Group element is displayed on the
upper border of the view.
For more information on the Topology view, see
and Viewing SIP Entities in Topology
Defines the type of IP Group.
■ [0] Server = Applicable when the destination
address of the IP Group (e.g., ITSP, Proxy, IP-PBX,
or Application server) is known. The address is
configured by the Proxy Set that is associated with
the IP Group.
■ [1] User = Represents a group of users such as IP
phones and softphones where their location is
dynamically obtained by the device when
REGISTER requests and responses traverse (or are
terminated) by the device. These users are
considered remote (far-end).
Typically, this IP Group is configured with a Serving
IP Group that represents an IP-PBX, Application or
Proxy server that serves this User-type IP Group.
Each SIP request sent by a user of this IP Group is
proxied to the Serving IP Group. For registrations,
the device updates its registration 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 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 des-
tination 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.
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