DSI-TTY, our industry leading TTY Equipment and Hearing Assistive Phone site has been redesigned and is now live. DSI-TTY has been serving the hearing impaired community for almost 10 years. We are an AZtedp provider, Arizona Telecommunications Equipment Distributor Program, and are the leading provider of hearing assistive equipment in Arizona and the surrounding states. Please come and visit dsi-tty.com and browse our selections. We have recently redesigned the complete navigation of the site adding choices for selections by price and by product type. We carry a broad selection of amplified phones, phone amplifiers, TTY devices, speakerphones, photo phones, remote control phones etc…. All of these items are available here through dsi-store.com, however, the DSI-TTY site is specific to hearing assistive products