Ctm - Telstra T165i User Manual

CTM

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CTM (Cellular Text Telephone Modem) is a text based communications protocol to offer support to
hearing and speech impaired people. Hearing or speech 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 & Read Received text is displayed on the terminal, Voice is relayed to the other party.
Write & Hear Text entered on the terminal is sent to the other party with incoming speech
heard from the other party.
Off All CTM is disabled, use the phone as normal.
• If you are using a TTY terminal the terminal baud rate must be set to 45.45 bps
• If you are using a termina with a built in CTM modem then select CTM Off on the handset
Handset > CTM
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