121
FCC HEARING-AID
COMPATIBILITY (HAC)
REGULATIONS FOR
WIRELESS DEVICES
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.
Hearing devices may also be rated. Your hearing
device manufacturer or hearing health profes-
sional may help you find this rating. Higher
ratings mean that the hearing device is rela-
tively immune to interference noise. The hear-
ing 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 consid-
ered for best use.
SAFETY AND
WARRANTY
120
On July 10, 2003, the U.S. Federal
Communications Commission (FCC) Report and
Order in WT Docket 01-309 modified the excep-
tion 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, hum-
ming, or whining noise. Some hearing devices
are more immune than others to this interfer-
ence 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.
FCC HEARING-AID
COMPATIBILITY (HAC)
REGULATIONS FOR
WIRELESS DEVICES
SAFETY AND
WARRANTY
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Summary of Contents for CDM8905
Page 2: ...User Guide CDM8905...
