User Manual

75
Making TTY Calls
• Circuit data — used for sending and receiving
faxes and for transferring large files
• Packet data — used for small file transfers such as
email
To use these services, you must install the iDEN
Wireless Data Services software (available
separately). For more information on setting up your
computer and your i530 phone for packet and circuit
data calls, refer to the Wireless Data Services User’s
Guide or contact your service provider.
Making TTY Calls
Note: This feature may not be offered by your
service provider.
To use your phone to make phone calls using a
teletypewriter (TTY) device:
1 Connect one end of a 2.5mm cable into the audio
jack on your phone. Connect the other end of the
cable to your TTY device.
2 Make sure that your phone’s TTY feature is on and
select the TTY mode you want to use.
3 Use your phone to enter phone numbers and make
calls.
When you make a TTY call, these icons appear on
the phone’s display:
TTY device features such as Turbo-Code,
High-Speed, and Interruption are not supported by
your phone. These features must be turned off or
disabled to use your TTY device with your phone.
Turning On the TTY Feature
Your phone’s TTY feature must be on if you want to
make TTY calls, set the TTY mode, or change the
TTY baud rate. To make sure the TTY feature is on:
From the main menu, select Settings > Phone
Calls > TTY. This field must say On.
Choosing a Mode
Your phone supports these TTY modes:
• TTY — You type and read text on your TTY device.
•VCO (Voice-Carry-Over) — You speak into your
phone and read text replies on your TTY device.
• HCO (Hearing-Carry-Over) — You type text on
your TTY device and listen to voice replies on your
phone speaker.
N Phone call is active.
O Phone call is on hold.