Refer to the exhibit.

Cisco 300-820 Question Answer

Refer to the exhibit. When a user tries to sign in to the Cisco Jabber client through Mobile and Remote Access, they receive this error message: “Cannot communicate with the server.” The external DNS server is configured with the SRV records listed in the exhibit.

What is the cause of the issue?

The collab-edge DNS record must be added to the DNS server and the _cisco-uds DNS record must be removed.

A Cisco CSF device must be configured in UC for the user and the _cisco-uds DNS record must be removed.

The HTTP allow list is not allowing communication with the Instant Message and Presence server.

The _sips DNS record must target expE-pub.cll-collab.internal and the _cisco-uds DNS record must be removed.

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Cisco 300-820 Summary

Vendor: Cisco
Product: 300-820
Update on: Jul 27, 2025
Questions: 207

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Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?

An administrator has been asked to configure Video Mesh signaling traffic to route through a...

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Refer to the exhibit.

The Answer Is:

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