Dial 711 or 800.735.2966

A person who is deaf, hard of hearing, deaf-blind, or speech-disabled uses a TTY to type his/her conversation to an operator. The operator then reads the typed conversation to a hearing person. Then the operator relays the hearing persons’s spoken words by typing them back to the TTY user.



Enhanced Turbo Code provides relay users with faster speeds and more convenience. Relay Missouri’s service will auto-detect the speed of the TTY used when the relay user dials 7-1-1 or the relay 800 number. When an eTurbo device is used, faster transmission speeds are achieved and relay calls are processed much faster.

Telebraille Service

Relay users with impaired vision often use special TTYs equipped with telebraille to read their telephone conversations. Missouri Relay accommodates telebraille users by reducing the speed of relay to 15 words per minute (WPM) and giving extra time to read and respond. When using a telebraille device, the hearing and sight impaired user must notify the Communication Assistant (CA) that they are using a telebraille machine.

For Computer Modem (ASCII) Users

Relay users can also access Relay Missouri through their computer modems. Instead of using a standard TTY to access relay, one could use a computer program that allows a computer telephone modem to use telephone lines to call Relay Missouri. A common setup is to have a Windows 95, 98, Millennium Edition, NT 4.0, 2000, or XP computer with a program called, “Windows Terminal” or “Terminal.” The computer needs to have a telephone modem (look for jacks on the outside or back of the computer that have a telephone symbol or look like they would have a telephone wire fit into) hooked up to an analog phone line (most homes are analog phones, but if you are in a business, check with your telephone administrator first). In the Terminal program, set your communications software to the following protocols:

  1. Speeds ranging from 300 to 2400 baud (set to max 2400 baud if possible)
  2. Set your “time out” to 100 seconds.
  3. Settings: 8 Bits No Parity 1 Stop Bit Full Duplex
  4. When calling at a rate of 300 baud or below, follow the above settings, using Half Duplex. To make a call from the terminal program, simply have the program use your computer modem to dial 711 or the Relay Missouri TTY 800 number. You will connect to relay and your call will be processed like a TTY call.

ASCII Split Screen

ASCII Split Screen is designed to allow High Speed ASCII computer users and Relay operators to type and communicate more clearly and quickly. Typed text by both the caller and the operator appears on a split screen window on the computer screen. ASCII users can interrupt the operator if needed and vice versa.

International Calling

Relay allows you to place and receive calls to and from anywhere in the world (using English or Spanish language only). Calls originating from outside of the US may also access relay by dialing: The country prefix and 605-224-1837

TTY Public Payphones

Many public pay phones have TTYs in them to provide accessible service to relay. * All local calls from TTY pay phones using relay are free of charge. * Toll calls can be billed through calling cards and prepaid cards. * TTY users who wish to use a coin TTY pay phone can use relay to assist in connecting calls.

Directory Assistance to TTY Users

You can connect to relay to assist in communicating with Directory Assistance (DA) such as 4-1-1. Even if a TTY user wants to get DA for a call to another TTY users, relay can assist in speaking with the appropriate local DA operator.

  1. Dial 7-1-1 or the Relay Missouri TTY 800 number.
  2. Request Directory Assistance from the relay operator. The relay operator will ask for specific information to locate and contact the appropriate DA operator.
  3. After obtaining the number, the caller may choose to place the call through relay, or they can hang up and dial the number to directly connect TTY to TTY.

Answering Machine Retrieval

TTY users can use relay to retrieve messages from their voice answering machines or voice mail. With a little preparation, it is very simple to get your messages. If you have to dial a telephone number to retrieve your answering machine or voice mail messages, relay will call that number and relay the messages. Please have any passwords or important access numbers ready. You can also instruct the relay operator before they call as to which buttons or passwords to key in, and they will go straight to relaying your messages. If the answering machine isn’t able to be retrieved from a phone line, or must be listened to from the same phone line as your TTY, here is how you can request answering machine retrieval:

  1. Your TTY must be able to hear your answering machine. The best way to do this is to have your TTY with a regular telephone handset on the TTY, instead of directly connecting the TTY to the telephone line. Most TTYs have this ability, but many newer TTYs don’t. Check your manual to make sure that the TTY is capable of “hearing” the TTY tones through the handset.
  2. Dial 7-1-1 or the relay 800 TTY number.
  3. When connected to relay, type “AMR” with any instructions or passwords and then “GA.”
  5. Place your handset on the speaker part of the answering machine and play until all messages have been retrieved. The relay operator is temporarily recording all your messages.
  6. When you are done, place the handset back on the TTY and type “GA.” The relay operator will listen to their recording and type your messages.
  7. When your recording is done, the relay operator will erase their recording to ensure your confidentiality.
  8. At this point, you may hang up, or make a relay call. The relay operator will stand by.