Zte Zinger Z667T User Manual And Safety Information page 63

to a limited set of phone numbers.
1. Touch the Home Key >
Numbers.
2. The following options are available:

Enable FDN: Enter the PIN2 code to enable the FDN
feature.

Change PIN2: Change the PIN2 code for FDN access.

FDN list: Manage the FDN list.
NOTE: The PIN2 code is provided by your carrier. Entering an
incorrect PIN2 code more times than allowed can lock your
micro-SIM card. Contact the service provider for assistance.
Set Up TTY Mode
Select a TTY mode for your phone to work with a teletypewriter,
or turn TTY off.
1. Touch the Home Key >
2. Touch TTY Off to turn the feature off, or touch TTY Full, TTY
HCO, or TTY VCO to select a mode for your phone to work
with the teletypewriter. Consult your teletypewriter
manufacturer's manual if necessary.
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 > Fixed Dialing
> > Settings > TTY mode.
> > Settings > DTMF tones.
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