Samsung SCH-R380 User Manual page 94

TTY Mode
Your phone is fully Teletypewriter (TTY)/Telecommunication
Device for the Deaf (TDD) compatible. You connect TTY/TDD
equipment to the headset connector on the right top portion of
your phone.
You can set your phone to allow TTY/TTD communication while
you converse with the other party, or you can limit voice
communication to Talking or Hearing only.
Note: TTY Mode must be enabled before you can use your phone with TTY/
TDD equipment.
The TTY Mode option has no effect on the phone's earpiece,
microphone, or speaker. When you select TTY Full, all currently
enabled sound functions remain enabled.
91
Voice Privacy
Voice Privacy lets you choose what level of voice security
(Standard or Enhanced) your phone will use.
Tip: You can change your Voice Privacy setting during a call by using the In-
Use Menu options. (See "In-Call Options Menu" on page 32 for more
information.)
DTMF Tones
DTMF Tones lets you set you phone to produce either Normal
length DTMF tones or Long DTMF tones when dialing phone
numbers.
Tip: Some automated systems react better to Long DTMF tones.