Color: BlueUse Google Voice with the OBi and enjoy free calls inside the USA and CanadaCall internationally at amazingly low rates to over 150 destinationsRates to China, India, and Mexico as low as 1¢ per minute – with no connection feeWhen someone calls, ring multiple OBi devices, anywhereBlock unwanted nuisance and tele-marketer callsVoicemail that acts like emailDesigned, developed and supported in the USAMany more features!. Automatic Attendant for Simplified Call Routing (AA).