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For Your Safety
Trying out the phone with your hearing
device is the best way to evaluate it for
your personal needs.
M-Ratings: Phones rated M3 or M4
meet FCC requirements and are likely
to generate less interference to hearing
devices than phones that are not labeled.
M4 is the better/higher of the two ratings.
T-Ratings: Phones rated T3 or T4 meet FCC
requirements and are likely to generate
less interference to hearing devices than
phones that are not labeled. T4 is the
better/higher of the two ratings.
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Hearing devices may also be rated. Your
hearing device manufacturer or hearing
health professional may help you find
this rating. Higher ratings mean that the
hearing device is relatively immune to
interference noise. The hearing aid and
wireless phone rating values are then
added together. A sum of 5 is considered
acceptable for normal use.
A sum of 6 is considered for best use.
In the above example, if a hearing aid
meets the M2 level rating and the wireless
phone meets the M3 level rating, the sum
of the two values equal M5. This should
provide the hearing aid user with "normal
usage" while using their hearing aid with
the particular wireless phone. "Normal
usage" in this context is defined as a
signal quality that's acceptable for normal
operation.
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