Pantech Matrix Pro - Manual (Page 197)

195 Chapter 14. Settings
SERVICE DIALING NUMBERS (SDN)
You can view the list of Service Dialing Numbers (SDN) assigned by
your service provider. These numbers include emergency numbers,
customer service numbers and directory inquiries.
`
NOTE
This menu is available only when your SIM card supports Service Dialing
Numbers.
SELECT TTY MODE
Your phone is able to operate with TTY (Teletypewriter) digital modes.
This feature is system dependent and may not be available in all areas.
1
On the home screen, press the Start > All Programs > More.
2
Select Settings > [O].
3
Scroll to Phone > More… > TTY Mode > [O].
4
Select TTY mode ( Full, Talk, Hear, Off)
5
Press Done.
PHONE