This has been a long time coming, but Google has finally added the ability to port your cellphone number.
The downside is that there is a 20 dollar fee to do this, but the upside would be that for those who do, you could have that one number you give out to everyone now routed to your Google Voice account, and through the use of rules / filter, control what becomes of the incoming calls.
For instance, you could have all phone calls from a particular number routed to your new cell phone number when they call the Google number.
You could create client lists and control what becomes of those calls too. During business hours, send them to your cell number, but after hours – straight to voice mail.
The action of porting your existing number is pretty easy. On your Google Voice account simply go to SETTINGS, then select the CHANGE/PORT link beside your Google Voice number. Remember, there is a 20 dollar charge, and there are restrictions from many wireless providers.
If you need help in Greenville / Upstate SC, let us know, we will do what we can! 864.990.4748 / firstname.lastname@example.org