Palm Treo 755P User Manual page 99

TTY/TDD enables you to use your device's phone if you are hearing impaired.
Select Default Mode to send and receive text. Select VCO Mode (Voice Carry Over)
to send voice and receive text. Select HCO Mode (Hearing Carry Over) to send text
and receive voice. See the following section, "TTY Use With Sprint Service," for
more information.
Ask to add unknown phone numbers after calls displays a prompt asking whether
you would like to add the unknown phone number to your Contacts list when you
complete a call.
Hearing Aid Compatibility sends the audio from your phone calls to the telecoil
rather than to the microphone of your hearing aid. See "Turning on the HAC
Setting" on page 333 for more information on this setting.
Caution:
5. Select OK.
TTY Use With Sprint Service
A TTY (also known as a 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 device is compatible with select TTY devices. You can connect a TTY/TDD machine,
headset, or hands-free kit to your device through the headset jack while this mode is
enabled. Please check with the manufacturer of your TTY device for connectivity
information and to ensure that the TTY device supports digital wireless transmission.
When establishing your Sprint Service, please call Sprint Customer Service via the state
Telecommunications Relay Service (TRS) by first pressing 711, and then pressing Talk
Then provide the state TRS with this number: 866-727-4889.
Section 2B: Phone Features
Do not turn on the Hearing Aid Compatibility setting unless you use a
hearing aid with a telecoil. Using this setting without a hearing aid or
with a hearing aid without a telecoil may be harmful to your hearing.
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