We need some help. We are using Flynumber services for a long time, we had a PBX instance installed in a local server with specific real/public IP. And since we forwarded calls from Flynumber to that IP Address and since Flynumber trunk were configured correctly in that local server everything worked fine.
But recently we changed the PBX instance from local server to a hosted cloud instance of the same PBX provider which is PASCOM. That instance doesn’t have a specific public IP where we can forward calls from Flynumber, there is only the domain which is https://pascom.cloud/nameofourcompany , so what can we do in this case? We want to continue to use FlyNumber’s DID numbers but we don’t know how to forward them to our new cloud PBX instance, what should we use to “Forwarding Details”? I suppose we have to choose VoIP option then “SIP” protocol but what should we write to “Enter Host” box and “Enter Details” box?
One more thing, how can I get our SIP credentials and other important information which are needed for SIP configuration from FlyNumber?
We wrote to the PASCOM support about this issue, asking them what to do and this is what they suggested:
"Technically the pascom.cloud infrastructure only allows providers that work with registration, so the pbx establishes the connection and no forwarding is needed.
In case the provider needs to whitelist the IP of the PBX we could look up the responsible proxy that will be used for this connection, but forwarding SIP to this IP without an established connection (from PBX) will not work."