User's Guide

T720 Settings

Setting TTY Mode

The TTY (Text Telephony) is used for those who need translation of typed text to voice and vice versa. In order to use

the TTY, you need to set the TTY mode because the default setting is OFF.

To set the TTY mode press ** and the menu option

(TTY Off) TTY off mode. The standard voice speaking mode and the listening mode.

This is the default setting.

(TTY full) TTY full mode. Transmit and receive the TTY characters.

(VCO) Voice Carry Over (VCO) mode. Receive TTY characters but transmit by

speaking into the speaker.

(HCO) Hearing Carry Over (HCO) mode. Transmit TTY characters but receive by

listening to the receiver.

NOTE: In order to use the TTY network, you must have a TTY-compatible phone and connect it to T720. Most digital

wireless devices are TTY-compatible.

About T720

T720 Info

To check T720 ‘s service status and current SW version, press the ‘Power button’ quickly from the Home screen.