Implementing Cisco Collaboration Cloud and Edge Infrastructure (CLCEI) — Question 126

A video device registered with Cisco UCM failed to make an outbound B2B call. From Expressway-C diagnostic logs, an engineer found that the destination pattern is “[email protected]:5061”, and the call was dropped with a 404 response code from Expressway-C. The search rule intended for this call-in Expressway-C is configured for Alias Pattern Match, Pattern type “Suffix,” and Pattern “example.com”. How must the configuration be changed to allow the call?

Answer options

• A. Update the route pattern in Cisco UCM to send calls to “example.com” to the correct port.
• B. Create a transform on Expressway-C to strip port numbers.
• C. Create a call policy rule on Expressway-E to allow calls to port 5061.
• D. Update the call policy list in Expressway-C to allow calls to “example.com”.

Correct answer: B

Explanation

The correct answer is B because creating a transform on Expressway-C to strip port numbers will allow the call to match the suffix pattern without the port, thereby resolving the 404 error. The other options do not address the issue of the port number causing the mismatch in the call setup.