Recently Gizmo5 added the ability to configure your Google Voice account within the Gizmo5 interface which allows for you to configure any SIP device (soft or hardware) to have free voice. I happened to have a SPA-2000 around so the below describes how to configure a Sipura SPA-2000 using Gizmo5 and a Google Voice account for free voice. For this howto you will need a SPA-2000, a Gizmo5.com account, and a Google Voice account.
Resetting a Sipura SPA-2000 to the factory default settings is easy. Resetting your Sipura device like this can make configuring things much easier as if you have ever been configured for a previous VoIP SIP provider you may miss a setting to get things working with your current provider. Follow the simple directions below to factory reset your Sipura SPA-2000 device.