Zte N861 User Manual page 68

2. Select one of the following options.

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.
For more information on HAC, see For Your Safety - Turning on the
HAC Setting on page xxx.
1. Touch the Home Key > Menu Key > System settings >
Call.
2. Tick the Hearing aids check box to turn on hearing aid
compatibility.
Set DTMF Tones
You can set the length of Dual-tone multi-frequency (DTMF)
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