A supported browser telephony app uses MMR call redirection. The host can reach the telephony service, but the endpoint firewall blocks the service connection and calls fail. Which network change addresses this failure?

Choose the single best answer.

A.Permit only the host to reach the telephony service and keep the endpoint block.
B.Permit the endpoint to reach the required telephony service endpoints.
C.Increase the host’s browser video cache while preserving the endpoint block.
D.Allow SMB from the endpoint to the profile share.

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✓ Correct answer

Permit the endpoint to reach the required telephony service endpoints.

With MMR call redirection, the media connection is between the local endpoint and the telephony app server. Successful host connectivity alone is insufficient for this path. Option explanations: A. Permit only the host to reach the telephony service and keep the endpoint block.: The host path already works; call redirection still needs the blocked endpoint path. B. Permit the endpoint to reach the required telephony service endpoints.: This provides the connectivity required by the redirected call path. C. Increase the host’s browser video cache while preserving the endpoint block.: Browser playback caching does not open the blocked call-media connection. D. Allow SMB from the endpoint to the profile share.: Profile SMB access is unrelated to the endpoint’s telephony connection. Sources: Multimedia redirection for video playback and calls — https://learn.microsoft.com/en-us/azure/virtual-desktop/multimedia-redirection

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