User's Manual

20 21
Operation
Operation
DISCLAIMER – Some hearing aid users have reported
a buzzing sound in their hearing aids when they are
using cell phones, indicating that the cell phone and
hearing aid may not be compatible. According to the
ANSI C63.19 standard (ANSI C63.19-2007 American
National Standard Methods of Measurement of
Compatibility Between Wireless Communications
Devices and Hearing Aids), the compatibility of a
particular hearing aid and cell phone can be predicted
by adding the rating for the hearing aid immunity to
the rating for the cell phone emissions. For example,
the sum of a hearing aid rating of 2 (M2) and a
telephone rating of 3 (M3) would result in a combined
rating of 5. Any combined rating that equals at least 5
would provide “normal use;” a combined rating of 6 or
greater would indicate “excellent performance.”
The immunity of this hearing aid is at least M2/T2.
The equipment performance measurements, categories
and system classifications are based upon the best
information available but cannot guarantee that all
users will be satisfied.
NOTE: The performance of individual hearing aids
may vary with individual cell phones. Therefore, please
try this hearing aid with your cell phone or, if you are
purchasing a new phone, be sure to try it with your
hearing aid prior to purchase. For additional guidance,
please ask your cell phone provider for the booklet
entitled “Hearing Aid Compatibility with Digital
Wireless Cell Phones.”
Manual Switching
Manual switching allows you to
switch the devices to telephone
mode when needed.
Ask your hearing professional
which program you should access
for manual telephone use.
General Telephone Use
Some hearing instruments work
best by holding the phone close
to, but not fully covering your
ear. In some instances, if you
encounter whistling (feedback),
tilt the receiver at an angle until
the whistling stops. Additionally,
the hearing instrument in the
non-phone ear (ear opposite the phone) may switch
to a telephone setting to reduce background sounds.
Your hearing professional can provide instructions and
techniques for your specific needs.