metal parts may change the RF performance of
C63.19-2011
hearing
aid
compatibility
the device, including its compliance with RF
standards.
exposure guidelines, in a manner that has not
•
The
ANSI
standard
for
hearing
aid
been tested or certified, and use such
compatibility contains two types of ratings.
accessories should be avoided.
• M-Ratings: Rating for less radio frequency
interference to enable acoustic coupling with
Hearing Aid Compatibility (HAC)
hearing aids.
regulations for Mobile phones
• T-Ratings: Rating for inductive coupling with
• Your phone is compliant with the FCC Hearing
hearing aids in tele-coil mode.
Aid Compatibility requirements.
• Not all phones have been rated, a phone is
• The FCC has adopted HAC rules for digital
considered hearing aid compatible under FCC
wireless phones. These rules require certain
rules if it is rated M3 or M4 for acoustic coupling
phone to be tested and rated under the
and T3 or T4 for inductive coupling. These
American National Standard Institute (ANSI)
ratings are given on a scale from one to four,