Tty Operation; Before You Make A Tty Call; Making A Tty Call - Motorola IDEN WIRELESS DATA SERVICES User Manual

TTY OPERATION

TTY operation provides assistance to hearing-impaired users.
Your computer screen and keyboard replace the standard TTY device that
you use with a telephone. Simply connect your data-enabled phone to a
computer with an RS232 data cable (see "Data Cables" on page 66).
To use TTY mode:
• Configure a modem by installing the software that came with your data
cable.
• Be sure HyperTerminal is installed in Windows 95, Windows 98, or
Windows NT on your computer. For more information, see "Setting
HyperTerminal" on page 69.

Before You Make a TTY Call

1. Connect the data cable to your data-enabled phone, as follows:
a. Plug the cable into the accessory connector on the phone.
b. Attach the other end of the cable to a serial communication
(COM) port on your computer.
2. Make an internet connection by following the instructions for
"Connecting to the Internet via Circuit-Switched Data" on page 54.
3. Return to this page and follow the instructions in "Making a TTY
Call".

Making a TTY Call

1. Double-click the icon that you created in the HyperTerminal setup.
The HyperTerminal window opens.
2. At the flashing cursor inside the HyperTerminal window, type ATZ0
(atz zero) then press Enter. You will see the message "OK".
3. Type AT+CBST=129 then press Enter. You will see the message,
"Ok".
4. Type ATD followed by the phone number in the following format:
ATD###-####. You are now in TTY mode.
Be sure to place your call to a TTY-specific phone number.
For assistance contact Motorola at 1-877-483-2840.
TTY Operation
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