LifeWatch ACT I, Руководство пользователя

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of wireless phones under the Hearing Aid Compatibility Act of 1988
(HAC Act) to require digital wireless phones be compatible with
hearing-aids. The intent of the HAC Act is to ensure reasonable
access to telecommunications services for persons with hearing
disabilities.
While some wireless phones are used near some hearing devices
(hearing aids and cochlear implants), users may detect a buzzing,
humming, or whining noise. Some hearing devices are more immune
than others to this interference noise, and phones also vary in the
amount of interference they generate.
The wireless telephone industry has developed a rating system for
wireless phones, to assist hearing device users find phones that may
be compatible with their hearing devices. Not all phones have been
rated. Phones that are rated have the rating on their box or a label
located on the box.
The ratings are not guarantees. Results will vary depending on the
user’s hearing device and hearing loss. If your hearing device
happens to be vulnerable to interference, you may not be able to use
a rated phone successfully. 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
likel
y to be more usable with a hearing aid’s telecoil than phones that
are not rated. T4 is the better/higher of the two ratings.
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