User's Manual 346 Document #: LTRT-89730
Mediant 3000
Parameter Description
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 (i.e., IP Group is
registered with the device). 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.
You can view the registration status of the Gateway-type IP Group in
the 'GW Group Registered Status' field, and view the IP address of
the IP Group in the 'GW Group Registered IP Address' field if it is
registered with the device.
Proxy Set
[IPGroup_ProxySetName]
Assigns a Proxy Set to the IP Group. All INVITE messages destined to
the IP Group are sent to the IP address configured for the Proxy Set.
For configuring Proxy Sets, see ''Configuring Proxy Sets'' on page 355.
Notes:
The Proxy Set must be associated with the same SRD as that
assigned to the IP Group.
You can assign the same Proxy Set to multiple IP Groups.
For the SBC application: Proxy Sets are used for Server-type IP
Groups, but may in certain scenarios also be used for User-type IP
Groups. For example, this is required in deployments where the
device mediates between an IP PBX and a SIP Trunk, and the SIP
Trunk requires SIP registration for each user that requires service. In
such a scenario, the device must register all the users to the SIP
Trunk on behalf of the IP PBX. This is done by using the User Info
table where each user is associated with the source IP Group (i.e.,
the IP PBX). For configuring the User Info table, see SBC User
Information for SBC User Database on page 693.
For the Gateway application: Proxy Sets are applicable only to Sever-
type IP Groups.
IP Profile
[IPGroup_ProfileName]
Assigns an IP Profile to the IP Group.
By default, no value is defined (None).
For configuring IP Profiles, see ''Configuring IP Profiles'' on page 391.
Media Realm Name
[IPGroup_MediaRealm]
Assigns a Media Realm to the IP Group. The Media Realm determines
the UDP port range and maximum sessions on a specific interface for
media traffic associated with the IP Group.
By default, no value is defined (None).
For configuring Media Realms, see Configuring Media Realms on page
319.
Notes:
For the parameter to take effect, a device reset is required.
If you delete a Media Realm from the Media Realm table that is
assigned to the IP Group, the parameter value reverts to None.
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