Zoiper is an open-source SIP softphone that lets you make high-quality VoIP calls from your computer.
Set up Zoiper
- Download Zoiper to your computer and open the app.
- Enter your username and password, then click Login.
- Username: Your phone number including the country code, without the + sign or spaces (e.g. 15084568090)
- Password: Your number’s password

- Enter the hostname provider: call.sipcity.com.au, then click Next.
- On the “Authentication and Outbound proxy” screen, click Skip.
- When configuration options appear, select the transport type and click Next.

Registration is now complete. Your phone should show as registered and you can start making and receiving calls.