Setup Grandstream Wave on Android
Download the Software from your Android Store onto your mobile
you will need your SIP User <your_SIP_username>, <your_password>
Once you have entered those details, press the tick in the top right
Go Back to Step 1 and Click on Advanced Settings and scroll down to Stun Server and edit the setting to phone.c-tel.co.nz
You'll see your account with a green dot next to it, if successfully registered!
If it's red, check your SIP User details and try again!
Tip: Go to Power Setting under battery and under unmonitored apps add Gwave to avoid Android from shutting down the app when not in use.