Last week we reported that Google had finally begun rolling out support for incoming number ports to its Google Voice service. Lack of the feature, as any Google Voice user will likely attest to, has been a sore spot for Google’s telephony product since the company first acquired GrandCentral in 2007. Today, Google has announced that the new feature is now available to all current Google Voice users. Number portability allows users to transfer their cell phone or landline telephone numbers between service providers. Google Voice has always supported outbound number porting, which allowed users to transfer their Google Voice number to another carrier, but incoming ports had been off limits until recently. Google charges a one-time $20 fee to port a number into Google Voice, and the process takes approximately 24 hours. Hit the break for a video explaining the process.