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TTYUVM Design 2 Click Image for Thumbnail Gallery of additional images of 12 line unit.

Low cost universal add-on for any voice mail system provides TTY/TDD callers with full equivalent access to your voice mail system. Automatically and effectively handle deaf callers on your regular voice telephone lines. Works on normal voice telephone lines. Automatically detects and handles TTY calls using multiple detection methods. Provides a functional equivalent of the voice mail system for Deaf and Hard of Hearing callers using TTY/TDD devices. Includes call transfer over computer networks, call forwarding to remote locations/devices, a future ability to read TTY messages verbally over the telephone, and many other advanced features.

Design 2 uses an 8051 for each of the two modems and uses PIC CPU's for the line cards. Hardware based software is written in C language. Code is modularized and well documented. The design consists of a modem board, two of which are used in a typical unit, though the unit will operate with one. The unit has a passive backplane type circuit board that the line cards and modems plugs into. The backplane board also contains the power supply. The design has a common line card design which permits use of the 50 wire telco connector on the backplane board or the mounting of RJ-11 modular jacks. Actually both methods can be used, with the exception of the 4 line cards that are opposite the telco connector. These shorter cards are the same design, with the modular jack section simply cut off. This design permits multiple configurations to meet a customers exact needs.

Design 1 - One & Two Line TTYUVM This is a single layer two sided board. Data and power circuits are well separated. Notice the clean design. This is a third generation board. The board shown above is a two line board. For a single line unit, the parts for the second line are simply left off the board. If you click on the picture below of the board on the work bench you will see an older version of the board design. Eight LEDs and a speaker allow the user to know exactly what a board is doing.

Two complete hardware designs. Design 1 is a board that fits in a standard modem case providing a one or two line unit with one TTY/ASCII modem and one serial port. Ideal for desktop or operator use. The design includes separate components for each telephone line, thus to produce a one line unit, the parts for the second line are just left off the circuit board. The modem can handle calls from either of the telephone lines. The unit includes touch-tone/rotary detection capability which makes any voice mail system fully accessible by rotary/pulse telephones. The unit has two positive and two negative option methods of detecting the presence of a TTY/TDD device or a rotary telephone. It is much more sopisticated than any other device ever marketed for a similar purpose. Design 1 uses an 8051 CPU. Both designs were implemented to meet FCC Part 15 and Part 68 regulations.

This is a second generation design. There is an earlier version of the board that was designed as part of phase II. The first version was re-designed. The first version of the board is shown to the right on the development bench along with some of the equipment used to develop it. Click on the image to see a close-up photo of the circuit board itself. All the board designs are double sided single layer. Single layer boards are very economical to manufacture. All the boards were auto-routed.

Both hardware designs come complete with a Windows 95/98/NT software program for operators and users. Software program is designed to support any type of modem and can handle multiple 12 line TTY Universal Voice Mail units. Software is written in Visual Basic 5.0. Software program provides an easy to use operator interface, text file display, a menu system, survey system, searchable databases, administrative controls and logs, automated time of day and day of week message processing and forwarding, and many other features. Basic DOS program also available, written in Power Basic, (i.e. MS QuickBasic).

Complete product design, including board designs (in OrCad, which can be easily imported into most other cad programs), bare boards and completed prototypes, c language cpu programming, custom development tools, all software code. Asking price $15,000.00. Over $290,000 has been invested in this project. For more information, contact Dan F. Schramm at GLINN Media Corp. at 305-849-5020, or send email below.

The Local Communicator Optional Module allowed the TTY-Vision unit to be used without a telephone line. The telephone line provided necessary power for the unit to work and this unit provided power to eliminate the telephone line. This allowed TTY-Vision to be used as a display device, for instance to put text on a television screen for an audience of deaf/hoh individuals.

Complete product design (2 designs), assembly source code, bare boards and several working completed units. Manufacturing cost of approx. $125.00 per unit in small quantities. Price also includes approx. 300 RF video modulators (shown toward the back of the photo) for older TV's without composite inputs. Original development cost $28,000. Asking price: $3,000.

This image shows the TTY-Vision display on an actual television screen. The actual font colors can be changed by modifying the embeded code. The video chip can display a range of colors for backgrounds, characters, and the outline around the character. The sale includes about 50 video chips and CPU chips for building these units. The video chip is used for on-screen programming of VCRs and television sets and the design can be easily modified to use any of the various integrated circuits made for this purpose.