Best Way of Receiving Calls Without SIM (VOIP)

[rocket2nfinity]

Does anyone know how I make an outgoing call to an actual number in these things as opposed to another SIP account? In Linphone, I tried to connect to a number, such as 123456789, and it connects to 123456789.linphone.org.

Is there a specific item I need to put in to get it to dial (like "dial:123456789" or "phone:123456789" or call 123456789" so it tries to call a normal phone line as opposed to a SIP address?

You need a SIP provider that allows you to access the regular phone system. Unless something has changed recently, Linphone by default does not connect to the regular phone system. It can, but you must contract with a SIP provider and input their sip URL. Then you can make and receive phone calls. Search google to find sip providers in your region.