136
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.
• Not all phones have been rated, a phone is
considered hearing aid compatible under FCC
rules if it is rated M3 or M4 for acoustic
coupling and T3 or T4 for inductive coupling.
These ratings are given on a scale from one
to four, where four is the most compatible.
Your phone meets the M3/T3 level rating.
• However, hearing aid compatibility ratings
don't guarantee that interference to your
hearing aids won't happen. Results will vary,
depending on the level of immunity of your
hearing device and the degree of your
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.
• This phone has been tested and rated for
use with hearing aids for some of the wireless
