MSC - Mobile Service Cloud - Service Interruption
Incident Lifecycle
Incident Timeline
Investigating
We've received reports of customers not having audio for calls, or one-way audio, as a result of faulty firewall configuration. As a quick fix, for those affected, you can whitelist the below:
85.119.48.0/21
31.169.56.0/21
188.94.184.0/22
UDP port range 10.000 - 60.000
At a later point, our support team will advise further on how to set up your firewall for WebRTC (used Native Voice in Service Cloud, Teams, Slack) to still function properly, irrespective of IP changes
85.119.48.0/21
31.169.56.0/21
188.94.184.0/22
UDP port range 10.000 - 60.000
At a later point, our support team will advise further on how to set up your firewall for WebRTC (used Native Voice in Service Cloud, Teams, Slack) to still function properly, irrespective of IP changes
Apr 1, 2026 at 8:02 AM UTC
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