Mazazik enables you to change your ringback tone to one of your choice, so all your callers, can listen to the latest great ringback tones before you pick up, we provide a large library of ringback tones that you can browse and choose from, you can subscribe to the service by: SMS send “Sub” to 707, To download a tone send tone code in a text message to 707. Customers can subscribe or cancel by dialing 707 and follow the voice instructions.