Phone Calls 38
provided with your TTY device, contact your TTY device manufacturer to purchase the
connector cable.
To turn TTY Mode on or off:
1. Touch > .
2. Touch > Settings > TTY mode.
3. Touch TTY Full, TTY HCO, or TTY VCO to turn TTY mode on.
– or –
Touch TTY Off to turn TTY mode off.
Note: When enabled, TTY mode may impair the audio quality of non-TTY devices connected to
the headset jack.
Warning: 911 Emergency Calling
It is recommended that TTY 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.
Hearing Aids
Your phone supports HAC (Hearing Aid Compatibility) function. When you turn on the hearing
aid compatibility and use a hearing aid device with a telecoil in it to answer the phone, it will help
you hear more clearly during the phone call.
1. Touch > .
2. Touch > Settings.
3. Check Hearing aids to turn on hearing aid compatibility.
DTMF Tones
This option allows you to set the length of Dual-tone multi-frequency (DTMF) signal tones.
1. Touch > .
2. Touch > Settings > DTMF tones.
3. Touch Short or Long.
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