AudioCodes Mediant 500L - Page 350

User's Manual 350 Document #: LTRT-10532
Mediant 500L Gateway & E-SBC
Parameter Description

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 177), 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_EnableUnAuthenticatedR
egistrations]
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.