Is county codes for Puerto Rico set just in 3CX or do I need in SIP Trunk also

[TownTech]

I got a message of forbidden when the receptionist tried to call a Puerto Rico number. I checked the box now in the advanced settings for that country now, but I am still getting that message.
Does this also have to be set in my SIP Trunk, which is Twilio.

Thanks

 

[TheodorosG_3CX]

Check also with the provider if you are allowed to make calls.
Also in the event log there is an error, if this is coming from the public ip of your provider then this is blocked from their side.