Click on play below and indulge me, please..... for your own benefit, I sincerely hope. GrandCentral gives you "One Number...for Life" - a phone number that is not tied to a device or a location, but is tied to you. Use GrandCentral to centralize your communication, customize how your callers are treated, and make sure you never miss a call you want to take (or take a call you want to miss). GrandCentral will let you define which phones ring, based on who's calling, and even let you ListenIn on voicemail before answering the call. You can also block calls from certain numbers, route different groups of callers to ring different phones (Friends, Family, Work or Others), switch calls between phones on the fly, record your calls, customize voicemail greetings for different callers, upload any MP3 to play as a ringback tone, and save all of your voicemail messages for life. - http://www.grandcentral.com/