Tty Mode; Ddtm Mode; Other Cdma Call Settings - HTC Desire 510 User Manual

1. With two fingers, swipe down from the status bar, and then touch
2. Select the Hearing aids option.

TTY Mode

A TTY (teletypewriter, also known as a TDD or Text Telephone) is a telecommunications phone that
allows people who are deaf, hard of hearing, or who have speech or language disabilities, to
communicate by telephone.
Your phone is compatible with select TTY phones. Please check with the manufacturer of your TTY
phone to ensure that it supports digital wireless transmission. Your phone and TTY phone will connect
using a special cable that plugs into your phone's headset jack. If this cable was not provided with your
TTY phone, contact your TTY phone manufacturer to purchase the connector cable.
When establishing your Sprint service, please call Sprint Customer Service using the state
Telecommunications Relay Service (TRS) by first dialing
state TRS with this number: 866-727-4889.
To turn TTY Mode on or off:
1. With two fingers, swipe down from the status bar, and then touch
2. Touch TTY Full, TTY HCO, or TTY VCO. Touch TTY Off to turn TTY mode off.
Note: When enabled, TTY mode may impair the audio quality of non-TTY phones connected to the
headset jack.
Warning: 9-1-1 Emergency Calling
Sprint recommends that TTY users make emergency calls by other means, including
Telecommunications Relay Services (TRS), analog cellular, and landline communications. Wireless TTY
calls to 9-1-1 may be corrupted when received by public safety answering points (PSAPs), rendering
some communications unintelligible. The problem encountered appears related to TTY equipment or
software used by PSAPs. This matter has been brought to the attention of the FCC, and the wireless
industry and the PSAP community are currently working to resolve this.

DDTM Mode

Select this option if you want to direct all calls to your voicemail when you are using data connection.

Other CDMA Call Settings

Select these options to enhance voice privacy, prepend numbers automatically, or use plus code dialing.
1. With two fingers, swipe down from the status bar, and then touch
2. Select or customize these options.

Voice Privacy: Select to enable enhanced privacy mode.
 Automatic prepend: Select to automatically add ―1‖ for long distance calls.

Plus code dialing: Touch to set plus code dialing. See
Settings
> Call.
. Then provide the
> Call >TTY mode.
> Call.
Make International Calls for details.
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