Palm Pre User Manual page 127

Enable TTY/TDD
A TTY (also known as TDD or text telephone) is a telecommunications device that allows
people who are deaf or hard of hearing, or who have speech or language disabilities, to
communicate by telephone. Your phone is compatible with select TTY devices.
You can connect a TTY/TDD machine to your phone through the headset jack. Check with
the manufacturer of your TTY device for connectivity information. Be sure that the TTY device
supports digital wireless transmission.
Before You
Begin
1. Connect a TTY/TDD device to your phone using the headset jack.
2. Open Phone
3. Open the application menu and tap Preferences.
4. In TTY/TDD, tap Off to switch TTY/TDD from Off to On.
Enable HAC
To use your phone with a hearing aid, turn on the HAC feature. This feature ensures that your
phone can make the necessary connection with a hearing aid.
1. Open Phone
2. Open the application menu and tap Preferences.
3. In HAC, tap Off to switch HAC from Off to On.
Section 2D: Phone
When TTY is enabled, you cannot use the headset jack for anything else,
and all audio modes are disabled on your phone, including holding the
phone up to your ear and listening.
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