Teams SIP Inbound Calling Issue

Incident Report for Onecom Partners

Resolved

The issue affecting inbound calls to Microsoft Teams via SIP has been resolved and service has been restored.

Our teams worked with the third-party vendor to identify and fix the issue. We will continue to monitor the service to ensure stability.

Thank you for your patience during this incident. If you continue to experience any issues, please contact support.
Posted Jul 02, 2026 - 16:49 BST

Update

We are continuing to investigate reports of inbound call failures affecting Microsoft Teams via SIP., including failover solutions.

Our engineering teams are working closely with a third-party vendor to identify the root cause and restore service as quickly as possible.

We appreciate your patience and will provide a further update as soon as more information becomes available.
Posted Jul 02, 2026 - 12:12 BST

Investigating

We have received reports that inbound calls using Microsoft Teams via SIP are currently failing.

Our engineering teams are actively investigating the issue and are working closely with all relevant suppliers and partners to identify the root cause and restore service as quickly as possible.

We understand the impact this may have on your customers and appreciate your patience and understanding while we work towards a resolution.

We will provide a further update as soon as more information becomes available. Thank you for your continued support.
Posted Jul 02, 2026 - 10:16 BST
This incident affected: IP Voice (Gradwell SIP).