I have just configured X-Lite on Windows to use my OPTUS SIP account (Australia), and this is working fine - outbound and inbound.
I was thinking it would be more versatile to use a mobile app, and here I am.
However, I am unable to get Zoiper to complete registration after setting up the account in the app.
I'm hoping someone can help me if I post the X-Lite config details here, on what setting I should input where in Zoiper to get it to work....
Account Name: <phone number, +including country code>
User ID: <phone number, +including country code>
Password: <Decrypted SIP Password>
Domain Proxy settings
Register with Domain and receive calls : Y
Send Outbound via: Proxy Address: IP:Port
Dial Plan: xx+#|x+T|[*#]xx|000|106|183[1-2] (copied from OPTUS settings)