SIP Trunks / VoIP Providers are a convenient way to connect 3CX to the public switched telephone network (PSTN). 3CX supports leading SIP Trunking Service Providers across the globe. These SIP Trunks have been tested with 3CX, and pre-configured templates are included in 3CX that make configuration quick and easy. Furthermore, both the SIP Trunk Provider and 3CX have committed to fully supporting the combined solution.
We strongly recommend using a preferred or supported SIP Trunk service provider. The 3CX team makes sure that all templates from listed SIP Trunk Providers are updated and tested with every release ensuring no issues arise for our users. Select your country to view a list of supported SIP Trunk providers. Apply here should you wish to become a supported VoIP / SIP trunk provider.
