User manual

Table Of Contents
114
change the RF performance of the device, including its
compliance with RF exposure guidelines, in a manner
that has not been tested or certified, and use such
accessories should be avoided.
Hearing Aid Compatibility (HAC) regulations
for Mobile phones
Your phone is compliant with the FCC Hearing Aid
Compatibility requirements.
The FCC has adopted HAC rules for digital wireless
phones. These rules require certain phone to be tested
and rated under the American National Standard
Institute (ANSI) C63.19-2011 hearing aid compatibility
standards.
The ANSI standard for hearing aid compatibility
contains two types of ratings.
M-Ratings: Rating for less radio frequency
interference to enable acoustic coupling with hearing
aids.
T-Ratings: Rating for inductive coupling with hearing
aids in tele-coil mode.