I use ringcetral.com I LOVE it. you get a full voicemail system. I have mine set up to welcome customers, then prompts them to push 1 for sales or 2 for customer service. When they choose an option, it forwards the call to whatever phone number I have set in the list first. if there is no answer, or if the call is denied, it moves on to the next number. I have it set to ring my home office first, then ring to my cell phone. If I don't take the call, it says "We're sorry, all representatives a busy helping other customers. Please leave a message and a customer service representative will get back to you shortly." It works very well. A bit hard to set up initially, but they were very helpful. You can also set your business hours so your phone doesn't ring all hours of the night. If you sign up, please tell them that (800)705-2056 sent you. They'll take a few bucks off my bill! :0)