The Uniphone 1140 is a a combination text telephone (TT or telecommunications device for the deaf, TTY/TDD) and standard telephone with voice carry over designed to enable persons who are deaf or hard of hearing and hearing individuals to use the same telephone. The unit is compact and features a display so that persons with hearing disabilities but enough speech to converse can speak directly to the party they are calling and read the responses as text. Other features include a standard hearing-aid compatible handset with volume control (20 decibel gain); adjustable ringer volume; hearing aid compatible handset; Turbo Code, which allows real time transmissions and interruptions; and Auto ID, which automatically sends signals to alert people to an incoming TT call. Other standard features include memory for storing conversations and auto answer messages, 10 speed dial buttons, emergency dialing keys, programmable auto answer message, Voice Carry Over (VCO) request, a TTY on/off switch, and a built in ring flasher to indicate incoming calls and interruptions. The four-row, 52-key keyboard features a QWERTY layout. Special keys include Dial, Menu, and Volume keys, as well as arrow keys to select functions and reveiw conversations. It also has sticky-key for single handed typing. The conversation is displayed on a 48-character LCD display with contrast control and backlight. Call progress indicates when the line you call is ringing or busy. This phone is also a standard telephone for incoming and outgoing voice phone calls. This phone also features a printer port for connecting an external printer (not included). POWER: Telephone connects directly to phone line. The system utilizes an alternating current (AC) adapter (charger) with 9-volt battery backup (battery not included). OPTIONS: Headset. DIMENSIONS: 8.6 x 7.1 x 2.5 inches with handset. WEIGHT: 1 pound, 2.5 ounces with battery. WARRANTY: One-year limited warranty. An extended warranty is available.