Motorola MOTW385 Guide de l'utilisateur Page 82

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Hearing Aids
Hearing Aid Compatibility
Hearing Aids
A number of Motorola phones have been tested for hearing aid
compatibility. When some wireless phones are used with certain
hearing aids, users may detect a noise which can interfere with
the effectiveness of the hearing aid.
Some hearing aids are more “immune” than others to this
interference noise, and phones can also vary in the amount of
interference noise they may generate. ANSI standard C63.19
was developed to provide a standardized means of measuring
both mobile phone and hearing aids to determine usability rating
categories for both.
Ratings have been developed for mobile phones to assist
hearing aid users find phones that may be compatible with their
hearing aid. Not all phones have been rated for compatibility
with hearing aids. Phones that have been rated have a label
with the rating(s) located on the box, and at
www.motorola.com/accessibility.
These ratings are not guarantees of compatibility. Results will
vary depending on the user's hearing aid and individual type and
degree of hearing loss. If a hearing aid is particularly vulnerable
to interference, even a phone with a higher rating may still cause
unacceptable noise levels in the hearing aid Trying out the
phone with your hearing aid is the best way to evaluate it for
your personal needs.
“M” Rating: Phones rated M3 or M4 meet FCC requirements
for hearing aid compatibility and are likely to generate less
interference to hearing aids than unrated phones. (M4 is the
“better” or higher of the two ratings.) On those models with an
extendable antenna, this rating is determined only with the
antenna extended.
“T” Rating: Phones rated T3 or T4 meet FCC requirements
and are likely to be more usable with a hearing aid's telecoil (“T
Switch” or “Telephone Switch”) than unrated phones. (T4 is the
“better” or higher of the two ratings.) On those models with a
telecoil mode setting, this rating is determined only with the
phone so set. For setting instructions, see “Features for the
Hearing Impaired” in the section entitled “Advanced Calling
Features”. Note that not all hearing aids have telecoils in them.
Hearing aids may also be measured for immunity to interference
from wireless phones and may have ratings similar to wireless
phones. Ask your hearing healthcare professional for the rating
of your hearing aid. Add the rating of your hearing aid and your
phone to determine the estimated usability:
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