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impaired persons can communicate using a teletype (TTY) terminal connected
to the mobile phone via a CTM Modem. The TTY signals are sent alongside
speech so it is possible to configure the system to enable speaking and hearing
as well as typing or receiving text to the TTY device. See below for the options
available:
CTM Mode
Description
Full
Text entered on the terminal is sent to the other party.
Received text from the other party is displayed on the terminal.
Talk &
Received text is displayed on the terminal, Voice is relayed
Read
to the other party.
Write &
Text entered on the terminal is sent to the other party
Hear
with incoming speech heard from the other party.
Off
All CTM is disabled, use the phone as normal.
TIPS
If you are using a TTY device make sure the baud rate is set to 45.45 bps
If you are using a terminal with a CTM modem built in then select CTM Off on
the handset.
13.17 T-Mode for hearing aid support
Menu
>
Settings
> tab right to
Handset > T-Mode
T-Mode can be set to improve the performance of the handset with hearing
aides. The audio output is optimised for Telecoil coupling.
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