300-070 Question #179: Real Exam Question with Answer & Explanation

The correct answer is C: This option could be used to block an external call from transferring to an external party.. The 'off-net' flag in a CUCM route pattern serves two related purposes: (D) When a call is routed through a route pattern marked as off-net, CUCM considers that call to be 'off the network' - meaning it is classified as an external (off-net) call. (C) This classification enables

Question

Which two statements describe the function of the off-net option in a route pattern? (Choose two.)

Options

AThe off-net option indicates that if a call is not routed through this route pattern, it is considered off
BThis option could be used to block an external call from transferring to an internal party.
CThis option could be used to block an external call from transferring to an external party.
DThe off-net option indicates that if a call is routed through this route pattern, it is considered off the

Explanation

The 'off-net' flag in a CUCM route pattern serves two related purposes: (D) When a call is routed through a route pattern marked as off-net, CUCM considers that call to be 'off the network' - meaning it is classified as an external (off-net) call. (C) This classification enables toll fraud prevention: CUCM can be configured to block an off-net call from being transferred or forwarded to another off-net destination, preventing an external caller from using your phone system to make external calls (a classic toll fraud scenario). Option A is incorrect because it describes the inverse logic. Option B is incorrect because the feature targets external-to-external (off-net to off-net) transfers, not external-to-internal.

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