An administrator must Implement toll-fraud prevention on Cisco Unity Connection by using restricted tables. Which action accomplishes this task?

Question

Options

• ABlock all numbers that start with 999*.
• BAllow calls to international operators and conference rooms only.
• CPermit calls only to specific domestic long-distance area codes.
• DAllow calls to the international operator only.

• A
  9% (5)
• B
  5% (3)
• C
  84% (46)
• D
  2% (1)

Explanation

Cisco Unity Connection restricted calling tables are used to control what external numbers the voice messaging system can dial out to, which is the primary mechanism for preventing toll fraud. Toll fraud typically involves unauthorized calls to expensive international numbers or premium-rate services. The most effective and precise toll-fraud prevention via restricted tables is to create an allowed list that permits calls only to specific, known domestic long-distance area codes, blocking everything else by default. Option A (blocking 999*) would block one specific prefix but leave everything else open. Options B and D both allow international operator access, which introduces toll-fraud risk. Option C enforces a least-privilege allow-list approach specific to domestic use cases.

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