Configuring Action for Classification Failure

If the device doesn't find a matching rule in the Classification table for the incoming SIP dialog-initiating request (i.e., classification fails), you can configure the device to reject or allow the call.

To configure action for unclassified calls:
1. Open the SBC General Settings (Setup menu > Signaling & Media tab > SBC folder > SBC General Settings).
2. From the 'Unclassified Calls' drop-down list, select one of the following:
Reject: The device rejects the call.
Allow: The device accepts the call and classifies it to an IP Group as follows:
i. The device determines the SIP listening port (e.g., 5061) on which the incoming SIP dialog request was received and then determines the SIP Interface that is configured with this same port (in the SIP Interfaces table).
ii. The device determines the SRD associated with the SIP Interface, and then classifies the SIP dialog to the first IP Group in the IP Groups table that is associated with this specific SRD. For example, if IP Groups #3 and #4 belong to the same SRD, the device classifies the call to IP Group #3.

3. Click Apply.