AudioCodes Mediant 500 MSBR, User Manual

Page: 320 / 1248

User's Manual 320 Document #: LTRT-10375
Mediant 500 MSBR

The option, Accept Registered Users from Same Source [2] does not
apply to registration refreshes. These requests are accepted even if
the source address is different to that registered with the device.

When the device rejects a call, it sends a SIP 500 "Server Internal
Error" response to the user. In addition, it reports the rejection (Dialog
establish failure - Classification failure) using the Intrusion Detection
System (IDS) feature (see Configuring IDS Policies on page 156), by
sending an SNMP trap.

When the corresponding parameter in the SIP Interfaces table
(SIPInterface_BlockUnRegUsers) is configured to any value other
than default [-1] for a SIP Interface that is associated with the SRD,
the parameter in the SRDs table is ignored for calls belonging to the
SIP Interface.

The parameter is applicable only to the SBC application.
Enable Un-Authenticated
Registrations
enable-un-auth-registrs
[SRD_EnableUnAuthenti
catedRegistrations]
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.

[0] Disable = The device rejects REGISTER requests from new users
that were not authenticated by a proxy server.

[1] Enable = (Default) 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.

For a SIP Interface that is associated with the SRD, if the
corresponding parameter in the SIP Interfaces table
(SIPInterface_EnableUnAuthenticatedRegistrations) is configured to
Disable or Enable, the parameter in the SRD is ignored for calls
belonging to the SIP Interface.

The parameter is applicable only to the SBC application.