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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
C63.19-2006 American National Standard
Methods of Measurement of Compatibility Be-
tween 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/T2) and a telephone rating of 3 (M3/T3)
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 measure-
ments, categories and system classifications
are based upon the best information available
but cannot guarantee that all users will be sat-
isfied.
Cell Phone Compatibility
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 guidance, please ask your
cell phone provider for the booklet entitled "Hearing
Aid Compatibility with Digital Wireless Cell Phones."
Telephone Use
Unless your hearing
loss is severe enough
to require the use
of an amplified
telephone, there is
an option available
on most hearing
aids to eliminate
the whistling, or
feedback, that may
be encountered as a
telephone is placed next to a hearing aid.
This option is called a Telecoil.
If you do NOT have a Telecoil:
If there
is a “whistling” sound, simply move the
telephone slightly away from the ear.
If you DO have a Telecoil:
Use your
control switch (either a push button or
a toggle switch) to move the control into
the “Telecoil” position. You must have a
hearing aid compatible telephone to work
with a Telecoil. Your hearing healthcare
provider can advise you on how to find
out whether your phone is compatible.
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