Hello,
When using flynumber SIP to receive calls, can I use other voip providers SIP account as outbound route, or only calls using flynumber balance are possible?
You may be able to set your SIP client or VOIP phone to use a SIP account for receiving and one for outgoing.
Perhaps a simpler method would be to forward the FlyNumber calls to the SIP provider. You’ll receive the FlyNumber calls and make outgoing calls with their service
Let us know if you have any other questions