AudioCodes E-SBC User Manual page 1202

CHAPTER 68 Configuration Parameters Reference
Parameter
[RegistrarProxySetID]
Mediant 1000 Gateway & E-SBC | User's Manual
■ [3] = Verify dialog-initiating INVITE and in-dialog requests.
The VerifyRecievedRequestUri parameter functions together
with the RegistrarProxySetID parameter, as follows:
■ Handling Dialog-Initiating INVITEs: If the
VerifyRecievedRequestUri parameter is configured to [2] or
[3] and the RegistrarProxySetID parameter is configured to
some Proxy Set, the device accepts dialog-initiating INVITE
requests received from the registrar at which the Accounts
(configured in the Accounts table) are registered. For dialog-
initiating INVITE requests received from the registrar on a
specific SIP Interface, the following rules apply (listed
according to priority):
✔
The top-most Via header must contain a host-resolved IP
address of the registrar; otherwise, the device drops the
INVITE request.
✔
The source IP address must be the same as the IP
address of the registrar; otherwise, the device rejects the
requests and sends a SIP 403 (Forbidden) response to
the registrar.
✔
The user part, specified in the Request-URI header,
must be identical to the Contact user part configured for
the associated Account, and the Account must be
registered. Otherwise, the device rejects the request with
a SIP 404 (Not Found) response. If the
RegistrarProxySetID parameter is not configured or no
Accounts are configured, the device accepts the dialog-
initiating INVITE request.
Note: This handling is applicable only to the SBC application.
■ Handling In-dialog Requests: If the
VerifyRecievedRequestUri parameter is configured to [1] or
[3], for all incoming in-dialog requests (including ACK and
CANCEL), the device checks if the Request-URI user part
matches the remote Contact user part (i.e., the Contact user
configured for the Account). If there is no match, the device
rejects the request and sends a SIP 481 response for
requests such as BYE and CANCEL, or a SIP 404 for other
requests, and for ACK it does not send any response.
Note: This handling is applicable to the Gateway and SBC
applications.
Defines a Proxy Set for the registrar. The parameter functions
together with the VerifyRecievedRequestUri parameter. For more
information, see the description of the VerifyRecievedRequestUri
parameter.
The default value is -1 (not defined).
Note: This setting assumes that the SIP Interface has only one
registrar.
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Description