Resolved -
This incident has been resolved. We will share a postmortem shortly.
Jan 28, 13:45 PST
Monitoring -
A fix has been deployed and we are monitoring the results.
Jan 28, 12:22 PST
Identified -
We have identified the source of the issue and are deploying a fix.
Jan 28, 12:09 PST
Update -
This issue is affecting customers sending UDP SIP traffic that exceeds the standard SIP MTU size. Switching to TCP is an immediate way to mitigate the problem.
Jan 28, 11:46 PST
Investigating -
We are continuing to investigate this issue.
Jan 28, 11:32 PST
Monitoring -
We identified an issue in the UK related to inbound calls with large UDP INVITE messages that exceed the MTU. This affected 0.04% of inbound calls in the region. We have updated a configuration for handling fragmented packets in that cluster, and the issue was mitigated as of 16:10 UTC.
The impact was limited to the UK; this issue was not observed in other clusters.
Jan 28, 09:50 PST
Investigating -
We are investigating reports of SIP INVITE requests not receiving responses in some EU regions. The impact appears to be very low. We will provide further details as they become available.
Jan 28, 08:45 PST
