Which action prevents the calls from reaching the PSTN using SCCP integration?

Fraudulent calls are being made from Cisco Unity Connection .

Which action prevents the calls from reaching the PSTN using SCCP integration?
A . Change the configuration of the routing rule.
B . Change the CSS of the voicemail port.
C . Change the Rerouting CSS on the trunk to Cisco Unity Connection.
D . Remove values from restriction table.

Answer: B

Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/unified-communications/unity-connection/119337-technote-cuc-00.html