(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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t e l e p h o n e u s e
c e l l p h o n e
c o m p a t i b i l i t y
Your hearing instrument allows you to use the
phone as you normally do – holding the phone
up to your ear. In some cases, you may need
your hearing instrument programmed with a
specific telephone setting. If this feature is
important to you, ask your hearing healthcare
professional to adjust one of the available
memory programs to assist your telephone
requirements.
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
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