Sprint Nextel VISION S1 - Manual (Page 82)

66 Section 2B: Controlling Your Phone’s Settings
To turn TTY Mode on or off:
1. Press >Settings > Others > TTY.
(An informational message is displayed.)
2. Read the disclaimer and press OK (left softkey).
3. Select Enable to turn TTY mode On.
– or –
Select Disable to turn TTY mode Off.
WARNING 911 Emergency Calling
Sprint recommends thatTTY users make emergency
calls by other means, including Telecommunications
Relay Services (TRS), analog cellular, and landline
communications. Wireless TTY calls to 911 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.
Note: In TTY Mode, your phone will display the TTY access icon.
If TTY mode is enabled, the audio quality of non-TTY devices
connected to the headset jack may be impaired.