Collaboration Communications Systems Engineer — Question 38

You have a Microsoft Teams Phone deployment.

You use Direct Routing with a Survivable Branch Appliance (SBA) at a site.

The site experiences an extended internet outage.

Which three PSTN calling scenarios are possible during the outage? Each correct answer presents a complete solution.

NOTE: Each correct selection is worth one point.

Answer options

• A. inbound PSTN calls
• B. hold and resume of PSTN calls
• C. dynamic emergency calling
• D. outbound PSTN calls
• E. call transfer of PSTN calls

Correct answer: A, B, D

Explanation

During an internet outage, inbound PSTN calls can be received through the SBA, allowing communication to continue. Additionally, hold and resume functionalities enable users to manage calls effectively. Outbound PSTN calls can also be made using the local resources of the SBA. However, dynamic emergency calling and call transfer are not feasible without internet connectivity.