Avoid Potential Hearing Loss - Casio G'zOne Commando User Manual

For more information about hearing aids and digital wireless
phones:
• FCC Hearing Aid Compatibility and Volume Control
http://www.fcc.gov/cgb/dro/hearing.html
• Hearing Loss Association of America
http://www.hearingloss.org/learn/cellphonetech.asp
• CTIA
http://www.accesswireless.org/hearingaid/
• Gallaudet University, RERC
http://tap.gallaudet.edu/voice
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Teletypewriter (TTY) Devices
You can use an optional teletypewriter (TTY) device with your phone
to send and receive calls. You must plug the TTY device into the
phone's headset connector and set the phone to operate in one of
three TTY modes.
A TTY is a communication device used by people who are hard of
hearing or have a speech impairment. TTY does not work from mobile
phone to mobile phone. Your phone has a 3.5mm jack. Use a TSB-121
compliant cable (provided by the TTY manufacturer) and a 3.5mm
to 2.5mm Audio Adapter to connect the TTY device to your phone.
Set the phone to Medium volume level for proper operation. If you
experience a high number of incorrect characters, adjust the volume
as needed to minimize the error rate. For optimal performance, your
phone should be at least 12 inches (30 centimeters) from the TTY
device. Placing the phone too close to the TTY device may cause
high error rates.
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Avoid potential hearing loss.

Prolonged exposure to loud sounds (including music) is the most
common cause of preventable hearing loss. Some scientific research
suggests that using portable audio devices, such as portable music
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