"Official" Trunks

[Shadragon]

What is involved in getting a trunk certified by 3CX? Our trunk has been fine until recently and now its got a red exclamation point. I'm told by the provider nothing has changed and everything still works fine, so wondering what's going on...

 

[YiannisH_3CX]

Hello @Shadragon

Please note that each supported provider must go through an interop test so that we ensure the compatibility with the PBX and test the functionality of the trunk.
More information on that here: https://www.3cx.com/partners/sip-trunks/voip-provider-interop-form/
Non supported providers are highlighted as not supported in the management console as do phones with unsupported firmware and custom templates.