TTY means a Text Telephone, or is sometimes referred to as a Telephone typewriter or telecommunication device for the Deaf. TTY is the more widely accepted term, however, many people use TTYs, not just people who are deaf. A TTY is a special device that lets people who are deaf, hearing impaired, or speech-impaired use the telephone to communicate, by allowing them to type messages back and forth. With early TTY models (such as in the photos) you set a telephone handset onto special acoustic cups built into the TTY. As you type, the message is sent over the telephone line, just as your voice would be sent over the telephone line if you talked. You can read the other person's response on the TTY's text display.These photos are significant as they record the introduction of TTY technology at Vicdeaf. TTY technology is a text-based system for communicating over phone lines and its introduction made the deaf and hearing impaired less isolated. Size 20.5cmHx25.5cmW; 5 photographstty, deaf, text telephone, telephone typewriter, tamara doyle, david hickey, melissa connor, tamara trinder

Glass paperweight with image of world map and caption '1990 Davis Cup Final, USA vs Australia' Materials: Glasstennis

Embroidered clothes patch branded 'Davis Cup by NEC' in blue and green thread on white background. Materials: Thread, Clothtennis

Silver bowl engraved 'Davis Cup by NEC World Group Semi Final India vs. Australia Chandigarh 93'. Materials: Silver/Metaltennis

Silver dish commemorating the1980 Davis Cup Semifinal between Italy and Australia. Rectangular with rounded corners Materials: Silver/Metaltennis

Small silver cup, commemorating 1974 Davis Cup. States that Australia defeated Pakistan and lost to India 3 matches to 2. Names players on Australian team. Materials: Silver/Metaltennis

Small silver cup, commemorating 1974 Davis Cup. States that Australia defeated Indoneisa and New Zealand and lost to Italy 3 matches to 2. Names players on Australian team. Materials: Silver/Metaltennis

Silver trophy jug. Inscribed 'Davis Cup 1977 Perth'. Contains loose label with branding 'Carrington Plate'. Materials: Silver/Metal, Papertennis

Colour photograph framed in silver frame. Frame engraved 'Compaq Grand Slam Cup, December 10-15 1991'. Materials: Glass, Silver/Metal, Paper, Photographic emulsiontennis

Cloth baseball cap branded with Davis Cup NEC. Green and white. Materials: Cloth, Thread, Cardboardtennis

Programme of 1934 Davis Cup Championships Materials: Ink, Papertennis

Photograph of Davis Cup team, date unknown, but including Harry Hopman, Roy Emerson, Ashley Cooper, Lew Hoad and possibly Frank Sedgman. Materials: Photographic emulsion, Papertennis

Colour photograph of Chris O'Neil holding the Akhurst Cup trophy and the Wm. J. Daish trophy. Materials: Photographic emulsion, Papertennis

Colour photograph of Barbara Jordan holding the Akhurst Cup trophy afer winning womens singles 1979 Materials: Photographic emulsion, Papertennis

Coy of Australian Tennis Magazine Februrary 1954. Image of the 1953/4 Davis Cup team including Lew Hoad and Harry Hopman. Materials: Ink, Papertennis

Ticket to Challenge Round of Davis Cup 28th -30th December 1953. Materials: Ink, Papertennis

Ticket to Challenge Round of Davis Cup 28th -30th December 1953. 1st Day Singles 28th December 1953. Materials: Ink, Papertennis

Token/ticket used by tournament usherettes to obtain refreshments, Davis Cup 1953 Materials: Ink, Papertennis

Programme for Davis Cup Challenge ROund 1951, White City Sydney. Materials: Ink, Papertennis

Programme for Davis Cup World Group Final - Australia V. Sweden; December 26-28, 1986, Kooyong. Materials: Ink, Papertennis

Small metal badge commemorating Davis Cup 1952 Materials: Metal compositetennis

Small metal badge commemorating Davis Cup 1952 Materials: Metal compositetennis

Small metal badge commemorating Davis Cup 1956 Materials: Metal compositetennis

Small metal medal commemorating Davis Cup 1999 Materials: Metal compositetennis

Spalding 'Davis Cup' model racquet Materials: Wood, Leather, Vinyltennis

Green and white cloth badge for Davis Cup by NEC Materials: Clothtennis

Plastic entry pass for 1990 Davis Cup Final (USA vs Australia) Materials: Ink, Plastictennis

Souvenir keyring for Davis Cup Final December1990, Australia vs. USA. Materials: Ink, Metaltennis

USTA guest pass badge for Davis Cup. Also states: 'Louisiana-Pacific U.S. Davis Cup Team Sponsor'. Materials: Ink, Metaltennis

Plastic entry pass for Davis Cup Final (USA vs Australia). Metal chain attached. Materials: Ink, Plastictennis