An engineer is implementing toll fraud prevention for incoming calls cluster-wide on Cisco UCM. What is the first step to configure this feature?
A. Set service parameter “System Remote Access Blocked Numbers” to True.
B. Set service parameter “Block OffNet To OffNet Transfer” to True.
C. Set service parameter “Block OffNet To OffNet Transfer” to False.
D. Configure blocking for inbound calls based on caller ID.
