Visit the Digital Voice Center from any computer with Internet access 1. Go to the Digital Voice Center at www.comcast.net/digitalvoicecenter. OR 1. If you are also a Comcast High-Speed Internet customer go to www.comcast.net.2. Log into your Comcast email.isit the Digital Voice Center from any computer with Internet access 1. Go to the Digital Voice Center at www.comcast.net/digitalvoicecenter. OR 1. If you are also a Comcast High-Speed Internet customer go to www.comcast.net.