Tty Support - Zte U.S. Cellular Home Phone Quick Start Manual

is only change the volume of the device (of course the volume of the
whole system will be changed at the same time), and you can also
change the volume of the external phone (if supported).

TTY Support

TTY (Text Telephony) and TDD (Telecommunications Device for the
Deaf) are supported by the U.S. Cellular® Home Phone. In order to
use the TTY network, you must have a TTY-compatible phone and be
in TTY mode. Note that most digital wireless devices are TTY-
compatible.
Dial *983*889*n# to set the TTY mode.
•
n = 0: TTY off mode. The standard voice speaking mode and
listening mode. This is the default setting.
•
n = 1: TTY full mode. Transmit and receive the TTY characters.
•
n = 2: VCO mode. Receive TTY characters but transmit by
speaking into the speaker.
•
n = 3: HCO mode. Transmit TTY characters but receive by
listening to the receiver.
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