AT&T CU405 manual Menu User, Transmission, TTY mode Tele Type writer, TTY Full, TTY Talk, TTY Hear

Settings

TTY (Menu 9.5.8)

Allows you to attach a TTY device enabling you to communicate with parties also using a TTY device.

A phone with TTY support is able to translate typed characters to voice. Voice can also be translated into characters and then displayed on the TTY.

Menu	User	Feature	Transmission	When making communications
			/Receiving Mode	with a normal terminal
TTY Full	For hearing-		text message transmission,	operator required
	/speech- impaired		text message reception
TTY+TALK	For hearing-impaired	can talk	voice transmission,	operator required
			text message reception
TTY+HEAR	For speech-impaired	audible	text message transmission,	operator required
			voice reception

TTY mode (Tele Type writer)

TTY modes are as follows :

1. TTY Full:

-Users who cannot talk and hear send and receive a text message through TTY equipment.

2. TTY Talk:

-Users who can talk but cannot hear receive a text message and send voice messages through TTY equipment.

3. TTY Hear:

-Users who can hear but cannot talk send a text message and receive voice messages through TTY equipment.

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