U.S. Backs Merging Net, Phone Numbers "In a recent internal letter, the Commerce Department recommended that the United States participate in an emerging electronic numbering system, known as ENUM, that will allow people to use one identifier for many different purposes, including mobile phones, e-mail, instant messaging and faxes. ENUM is designed to accelerate the convergence of the telephone network and the Internet and is expected to offer a huge boost to online telephony services." Cool this also likely means numbers need to be portable and i can leave my damn cell provider!!!