We also experienced this issue across 3 different orgs hosted in 3 different locations all on EMEA / Dublin. The issue occurred between 16:30 and 16:40 BST. The on premise edges were showing disconnected and calls could not be made.
There was definitely an outage on the EMEA region at this time. Raising 3 cases with customer care now.
UPDATE: Can see this has now been posted on the status page.
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Braiden Woodward
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