Filter
Top Products
N
o
t
for
C
o
m
m
e
r
c
i
a
l
U
s
e
42 Extras Menu
After you have verified that your phone operates in TTY
mode and you want to switch back to handheld phone
operation, unplug the 2.5 mm plug from your phone. You
can then use your phone normally.
If you want to switch from handheld to TTY operation
(after you are in TTY mode), simply re-insert the 2.5 mm
plug into the handset jack. You will know your phone is
back in TTY operation because the TTY symbol will
reappear in the lower lefthand corner of your display.
Optimum Use
TTY communications can be conducted from moving
vehicles, however, it may be dangerous to operate a
vehicle and communicate on your mobile phone at the
same time. You may experience a higher character error
rate of the TTY conversation while in motion. For the
highest quality communications, it is best to remain
stationary.
The TTY feature works in most signal strength areas. You
may experience a higher character error rate in low signal
coverage areas. You may be able to move the cellular
handset to get a better signal to reduce the character
errors.
Status Information
You can access the status screen by pressing the upper or
lower side volume key when you are not on a call. The
screen will display the handset’s TTY status when
TTY
mode is On.
TTY Call Types
The
TTY mode turns On TTY capability in the phone and
allows the phone to signal to 911 centers, 711 centers,
landline users, and users of other cell phone devices.
You can also place calls to TTY users that use other
Note!
The handset Turn on HCO Mode option and
Turn on VCO Mode option should not be used
if external HCO/ VCO features are built into
the TTY device. The handset option items are
intended as an alternative method of gaining
access to HCO and VCO, but are not required
to be activated if the external TTY device has
the HCO/VCO feature.
Note!
Your Sony Ericsson mobile phone has a menu
timer that clears the display if a key is not
pressed within 19 seconds.