Sometimes network configuration can prevent data from reaching Bria, resulting in a timeout error or one-way audio problems. You can change your network topology settings to work around this in many cases.
Please go to your Bria's Account Settings -> SIP account -> Topology and then please try all the four different firewall traversal method settings found there. You can omit testing the TURN setting if you have not been given a specific TURN server to use by your provider, and in this case, just test the other three settings. When you try STUN, please enter stun.counterpath.com in the server address field found below the four options. Please note that the full-time operation of the CounterPath STUN server is not guaranteed.