Emerson Switchboard PHONE LINE SHARING SYSTEM. Get That Call .... Get That Fax While You're Online ... with just one phone line. Are you tired of getting kicked off the computer, missing important phone calls and hearing those annoying busy signals, all because everyone in the house is sharing ONE phone line? NOT ANYMORE! The Emerson Switchboard temporarily splits your phone signal into three separate lines. COMPUTER, PHONE, FAX. Get a quick phone call while you are online! Requires call waiting option from your phone company. Length of time you can stay connected online varies with each internet service provider. About 20 to 30 seconds. Deluxe AC powered unit $39.90. We do not charge your card until we ship! AS SEEN ON TV.