3CX outbound impairment

Incident Report for Flowroute

Resolved

This incident has been resolved.

Posted Jul 01, 2025 - 11:41 PDT

Identified

3CX customers are experiencing issues with some outbound calls due to Private IP addresses in the SIP headers. Some outbound carriers are no longer accepting traffic from Private IP addresses. 3CX has pushed an update for v20 update 6 that allows customers to update to a new 3CX Flowroute template and adjust the Via Header IP address to the Public IP address. This can be done by selecting the new template and navigating to the “Voice and Chat” tab, enabling the “Public IP in VIA Header” setting, entering your public IP address.

Posted Jul 01, 2025 - 08:37 PDT

This incident affected: Voice (Outbound Voice).