T-Mobile USA are trialling an add-on scheme to their Hotspot @Home service – which allows you to make unlimited national calls via your WiFi-equipped cellphone and home router – that will allow unlimited domestic landline calls via a new, dual-SIM equipped Linksys router.  The service, Hotspot @Home Talk Forever Home Phone, is being tested in Seattle and Dallas, where it is available as a bundle with the Linksys WRTU54G router and VTech DECT phone.

The new router costs $49.99 with contract, and the service is a $10 add-on to your monthly T-Mobile bill.  Calls are routed via the internet or, alternatively, via the T-Mobile network. 

[via TBG]