Outage in Flowroute

3CX outbound impairment

Resolved Minor
July 01, 2025 - Started 4 months ago - Lasted about 3 hours
Official incident page

Incident Report

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.
Components affected
Flowroute Outbound Voice

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Latest Updates ( sorted recent to last )
RESOLVED 4 months ago - at 07/01/2025 06:41PM

This incident has been resolved.

IDENTIFIED 4 months ago - at 07/01/2025 03:37PM

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.

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