The Dialogue VCO is a text telephone universally designed to be used by individuals with and without hearing disabilities. This phone features a hearing-aid compatible amplifier and automatic tone enhancement which amplifies the incoming voice up to 30 decibels. For people with severe hearing loss or who are deaf, Voice Carry Over (VCO) calls can be made through the local toll-free relay service. VCO enables the user speak in the normal fashion while displaying incoming messages as text on the screen. Other features include a ringer adjustable to 85 decibels; a hold button with auto release; an answering machine that takes text messages; memory dialing; a ring flasher; telephone line signal indicator; preset text messages for initiating VCO calls; a lighted, two-line, 20-character display; last number redial; and an amplifier button.