QuestionQ15

On-Premises Call Control

During a conference call, a company CTO adds an external user to the call. The CTO leaves when the call ends, but the external user remains connected and dials a premium-rate number. Several weeks later, the CTO receives an unexpectedly high phone bill.

The CTO decides to implement an Ad Hoc conference restriction. Which parameter must be adjusted?

  • A Drop Ad Hoc Conference
  • B Limit Ad Hoc Conference
  • C Restrict Ad Hoc Conference
  • D Monitor Ad Hoc Conference
Explanation

The Drop Ad Hoc Conference service parameter prevents toll fraud when an internal conference controller disconnects while external callers remain connected. Configuring it to end the conference when no OnNet party remains, or when the conference controller leaves, prevents the external participant from retaining the conference connection to place a premium-rate call.

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