Download a client to call from PC
We are not limiting your choice and you can use any of SIP phone 
programs which can be installed and used on your PC or mobile phone. You are welcome to use any of your favorite free or commerce clients. For MAC and Windows users we can offer Australian Phone tested free application X-Lite that supports all required functionality, set of codecs and features.
Please check X-Lite configuration mannual here: https://www.australianphone.com.au/support/setup-guides/209-x-lite
