SettingsSection 2C. Settings 63TTY Use With Sprint ServiceA TTY (teletypewriter, also known as a TDD or TextTelephone) is a telecommunications device that allowspeople who are deaf, hard of hearing, or who havespeech or language disabilities, to communicate bytelephone.Your phone is compatible with select TTY devices.Please check with the manufacturer of your TTY deviceto ensure that it supports digital wireless transmission.Your phone and TTY device will connect via a specialcable that plugs into your phone’s headset jack. If thiscable was not provided with your TTY device, contactyour TTY device manufacturer to purchase theconnector cable.When establishing your Sprint service, please callSprint Customer Service via the stateTelecommunications Relay Service (TRS) by firstdialing . Then provide the stateTRS with this number: 866-727-4889.To turn TTY Mode on or off:1. Select and press > Settings > More... >Accessibility > TTY Options. (An informationalmessage will be displayed.)2. Read the informational message and press .3. Select TTY Full, TTY + Hear, TTY+ Talk, or TTY Off andpress .Note In TTY Mode, your phone will display the TTY accessicon.If TTY mode is enabled, the audio quality of non-TTYdevices connected to the headset jack may beimpaired.Sprint M540.book Page 63 Wednesday, August 27, 2008 10:00 PM