28
Cell phone
Some hearing system users have reported a buzzing sound in their
hearing systems when they are using cell phones. According to the
ANSI C63.19 standard, the compatibility of a particular hearing system
and cell phone can be predicted by adding the rating for the hearing
system immunity to the rating for the cell phone emissions. The sum
of the hearing system rating (e.g. M2/T2 = 2) and the telephone rating
(e.g. M3/T3 = 3) is 5, and any combination that equals 5 will provide
‘normal use’. A sum of 6 or greater indicates ‘excellent performance’.
The equipment performance, measurements, categories and system
classifications are based upon the best information available but
cannot guarantee that all users will be satisfied.
The rating of this hearing system is at least M2/T2. Your hearing
healthcare professional can provide the actual rating for this hearing
system.
Note: the performance of the individual hearing systems
may vary with individual cell phones. Therefore, please
try the hearing system with your cell phone or, if you are
purchasing a new phone, please be sure to try it with your
hearing system prior to purchase. For additional guidance,
please ask your hearing healthcare professional for the
booklet entitled “Hearing system compatibility with digital
wireless cell phones.”
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