Oracle Communications Session Border Controller — Question 51

Your customer would like to allow call attempts only from User Agents (UAs) who have previously registered through the Session Border Controller or who are configured as session agents.
How would you accomplish this?

Answer options

• A. Navigate to the sip-port configuration element and set the allow-anonymous parameter to agents-only.
• B. Navigate to the session-agent configuration element and set the allow-anonymous parameter to prev-registered.
• C. Navigate to the sip-port configuration element and set the allow-anonymous parameter to realm-prefix.
• D. Navigate to the sip-port configuration element and set the allow-anonymous parameter to registered.
• E. Navigate to the session-agent configuration element and set the allow-anonymous parameter to 403-forbidden.

Correct answer: D

Explanation

The correct answer is D because setting the allow-anonymous parameter to registered ensures that only UAs that have successfully registered can make call attempts. The other options either do not restrict anonymous calls effectively or use incorrect parameters that do not meet the customer's requirement.