Zte Z936L User Manual page 69

TTY Off: Users who can hear and talk can disable TTY

support.
TTY Full: Users who cannot talk or hear may use this

mode to send and receive text messages through TTY
device.
TTY HCO: Users who can hear, but cannot talk, may use

this mode to listen to conversation of the other party, and
respond via text messages.
TTY VCO: Users who can talk, but cannot hear, may use

this mode to talk through the phone and receive
responses via text messages.
Set Hearing Aids
Your phone supports HAC (Hearing Aid Compatibility) function.
When you turn on the hearing aid compatibility and use a hearing
aid with a Telecoil to answer the phone, it will help you hear more
clearly during the phone call.
1. Touch the Home Key >
2. Check Hearing aids to turn on hearing aid compatibility.
Set DTMF Tones
You can set the length of Dual-tone multi-frequency (DTMF)
signal tones.
1. Touch the Home Key >
2. Touch Normal or Long.
> > Settings.
> > Settings > DTMF tones.
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