LG CU320 - Manual (Page 76)

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Settings
Others
Menu 9.0
Auto Key Lock (Menu 9.0.1)
You can choose to lock the keypad automatically by
selecting the following: Off / 3 Seconds / 5 Seconds /
10 Seconds. If you don't press any key during the time
you set, keypad is locked automatically.
TTY (Menu 9.0.2)
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.
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 through TTY equipment.
3. TTY Hear:
- Users who can hear but cannot talk send a text
message and receive voice through TTY equipment.
Connecting TTY Equipment and a Terminal
1. Connect a TTY cable to TTY connection on the
terminal. (TTY connection location the same as a
hand free ear jack)
2. Enter the phone menu and set up the desired TTY
mode. (For a TTY mode, see the following)
Menu User Feature
Transmission When making communications
/Receiving Mode with a normal terminal
TTY Full
For hearing- text message transmission,
operator required
/verbally- impaired text message receiving
TTY+TALK For hearing-impaired talkable
voice transmission,
operator required
text message receiving
TTY+HEAR For verbally-impaired audible
text message transmission,
operator required
voice receiving