AudioCodes Mediant 500 MSBR, User Manual

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Version 7.2 333 Mediant 500 MSBR
User's Manual 20. Control Network
Enable Un-Authenticated
Registrations
enable-un-auth-registrs
[SIPInterface_EnableUn
AuthenticatedRegistratio
ns]
Enables the device to accept REGISTER requests and register them in
its registration database from new users that have not been
authenticated by a proxy/registrar server (due to proxy down) and thus,
re-routed to a User-type IP Group.
In normal operation scenarios in which the proxy server is available, the
device forwards the REGISTER request to the proxy and if authenticated
by the proxy (i.e., device receives a success response), the device adds
the user to its registration database. The routing to the proxy is according
to the SBC IP-to-IP Routing table where the destination is the proxy’s IP
Group. However, when the proxy is unavailable (e.g., due to network
connectivity loss), the device can accept REGISTER requests from new
users if a matching alternative routing rule exists in the SBC IP-to-IP
Routing table where the destination is the user’s User-type IP Group
(i.e., call survivability scenarios) and if the parameter is enabled.

[-1] Not Configured = (Default) The corresponding parameter in the
SRDs table (SRD_EnableUnAuthenticatedRegistrations) of the SRD
associated with the SIP Interface is applied.

[0] Disable = The device rejects REGISTER requests from new users
that were not authenticated by a proxy server.

[1] Enable = The device accepts REGISTER requests from new users
even if they were not authenticated by a proxy server, and registers
the user in its registration database.
Note:

Regardless of the parameter, the device always accepts registration
refreshes from users that are already registered in its database.

If configured to Disable or Enable, the parameter overrides the
'Enable Un-Authenticated Registrations' parameter settings of the
SRD (in the SRDs table) that is associated with the SIP Interface.

The parameter is applicable only to the SBC application.
Max. Number of
Registered Users
max-reg-users
[SIPInterface_MaxNumO
fRegUsers]
Defines the maximum number of users belonging to the SIP Interface
that can register with the device.
By default, no value is defined (i.e., the number of allowed user
registrations is unlimited).
Note: The parameter is applicable only to the SBC application.
20.4 Configuring IP Groups
The IP Groups table lets you configure up to 102 IP Groups. An IP Group represents a SIP
entity in the network with which the device communicates. This can be a server (e.g., IP
PBX or ITSP) or a group of users (e.g., LAN IP phones). For servers, the IP Group is
typically used to define the server's IP address by associating it with a Proxy Set (see
Configuring Proxy Sets on page 348).
You can use IP Groups for the following:

SBC application: Classification of incoming SIP dialog-initiating requests (e.g., INVITE
messages) to IP Groups based on Proxy Set. If the source address of the incoming
SIP dialog is defined for a Proxy Set, the device assigns ("bonds") the SIP dialog to
the IP Group associated with the Proxy Set. The feature is configured using the IP
Groups table's 'Classify by Proxy Set' parameter. For more information and
recommended security guidelines, see the parameter's description, later in this
section.