For Your Safety
97
tissue. The standard incorporates a substantial margin of safety to give
additional protection for the public and to account for any variations in
measurements.
FCC Hearing-Aid Compatibility (HAC) Regulations
for Wireless Devices
On July 10, 2003, the U.S. Federal Communications Commission (FCC)
Report and Order in WT Docket 01-309 modified the exception 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 to 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 likely
to generate less interference to hearing devices than phones that are not
labeled. T4 is the better/ higher of the two ratings.
Hearing devices may also be rated. Your hearing device manufacturer or
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