Implementing Cisco Collaboration Cloud and Edge Infrastructure (CLCEI) — Question 89

Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system. Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?

Answer options

• A. Ensure that only requests that are authenticated are allowed to make a PSTN call.
• B. Avoid using any wild card in the source settings in the search rules.
• C. Add registered devices only in the search rule for the PSTN gateway.
• D. Add registered devices only in the zone for the PSTN gateway.

Correct answer: B

Explanation

Option B is correct because avoiding wildcards in the source settings helps prevent unauthorized access and potential fraud calls to the PSTN gateway. The other options either focus on authentication measures or device registrations, which do not directly address the search rule configuration required to secure the gateway against fraudulent calls.