In my two previous posts, I showed you how to use Google Voice and the Gizmo Project to set up your Nokia N810 internet tablet as a free wifi phone, and how to unlock your old Sunrocket analog telephone adapter (ATA) (Linksys SPA2102-R) for use with another VoIP service.
In this post, I’ll show you how to set up your Sunrocket ATA and landline phone for free domestic phone service (US only) using Google Voice and the Gizmo Project. If you don’t already have an ATA, I’ve found the Linksys SPA2102 VoIP Phone Adapter with Router to be an excellent and reliable piece of equipment which can be configured for use with most SIP-based VoIP services.