V-Tech 3-Handset Cordless Phone Answering System with Video Doorbell "I wonder who's calling?" Whether it's the telephone caller or the front door visitor, you never have to be in the dark again. This versatile phone system lets you know who's calling as they ring in, so you don't inadvertently hurry to answer a telemarketer, and takes a message when you can't answer. It also sends a photo to let you know just who's knocking up front. After all, there's nothing wrong with therightsurprise visitor.