c e l l p h o n e
c o m p a t i b i l i t y
14
13
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 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/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
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."
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