Block Unclassified Calls
It's recommended that you block incoming calls that can't be classified to an IP Group, based on the rules in the Classification table (discussed in the previous section). If unclassified calls are not blocked, they are sent to the default SRD / IP Group and therefore, illegitimate calls can be established.
| ➢ | To block unclassified calls: |
| 1. | Open the SBC General Settings page (Setup menu > Signaling & Media tab > SBC folder > SBC General Settings). |
| 2. | From the 'Unclassified Calls' drop-down list, select Reject: |
Blocking Unclassified Incoming Calls
