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Which of these methods can be used to implement toll-fraud prevention?

Posted: Fri Jul 22, 2022 3:37 pm
by answerhappygod
Which of these methods can be used to implement toll-fraud prevention?

A. drop conferences when only two attendees remain
B. block on-net to on-net calls
C. deploy conferencing resources to only those employees that require the service
D. drop conferences when no on-net party remains