Motorola A840 CDMA2000 Manual page 27

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Note: Use a TSB-121 compliant cable (provided by the
TTY manufacturer) to connect the TTY device to your
phone.
Note: Set the phone to level 4 (middle setting) for
proper operation. If you experience a high number of
incorrect characters, adjust the volume as needed to
minimize the error rate.
Note: For optimal performance, your phone should be at
least 12 inches (30 centimeters) from the TTY device.
Placing the phone too close to the TTY device may cause
high error rates.
Setting TTY Mode
When you set your phone to a TTY mode, it operates
ù
in that mode whenever the TTY device is connected.
Find the Feature
Press
1 S up or down
2 SELECT (-)
The TTY Setup menu can include the following options:
Press
TTY
M > Settings > Initial Setup
> TTY Setup
To
scroll to the TTY mode
select the TTY mode
To
transmit and receive TTY
characters
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