350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

Question

The security department will audit an IT department to verify that the appropriate guidelines are being followed. Call detail record reports indicate unauthorized access to the PSTN. Which two actions should an administrator verify to prevent unauthorized use of the telephony system?

Choose two

A Forced authorization code is used to recognize a dialing extension and authorize an international call.
B Ensure that ad hoc conference calls are dropped if an external user is added.
C Call forward settings (All/Busy/No Answer) are restricted to internal extensions in the network.
D For extension mobility, logged-out CSS is restricted to internal extensions and emergencies.
E Add an additional firewall between the Cisco UCM server and the Expressway Core server.

Explanation

Call-forward destinations are routed using their configured calling search spaces, so limiting Call Forward All, Busy, and No Answer to internal extensions prevents those features from redirecting calls to the PSTN. A logged-out Extension Mobility phone uses its configured device and line characteristics; limiting its CSS to internal and emergency destinations prevents unauthenticated use of that phone for external calls.

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350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

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