Although we recommend the use of supported VoIP Providers, in some cases it may be necessary to use an unsupported VoIP Provider.
3rd Party Supported VoIP Providers
3rd Party supported VoIP providers have been tested by the VoIP Provider or by 3CX and at the time of testing they we’re known to work. You can find a list of 3rd party supported VoIP Providers here.
Community tested VoIP Providers
Community tested VoIP Providers have been reported as working by the community. 3CX has done no formal testing on these VoIP Providers. A list can be found here
Submitting a community tested VoIP Provider
If you are using a VoIP Provider that you would like to recommend, use this form to submit it.