Samsung SGH-C207CSACIN - Manual (Page 163)

Phone Settings
162
1. From the menu screen select Phone Settings (Menu
9).
2. Press the 9 key to access this function.
3. Enter 4-T-T-Y or (4889) in the password field and press
the OK soft key.
The following options are available:
Enable: CTM is active and TTY is available for use.
Disable: CTM is not available for use.
Note:
For additional technical support you may access the following website or
call 1-888-987-4357.
http://www.samsungtelecom.com/contact_us/
accessibility.asp