Quick Start Guide

(hearing aids and cochlear implants). This hearing-aid
compatibility (HAC) rating system is described in the American
National Standards Institute (ANSI) C63.19 standard and
includes the following ratings:
M-Ratings: For phones that use acoustic coupling with hearing
devices that are not operating in telecoil mode. Phones rated
M3 or M4 meet FCC HAC requirements and are likely to
generate less radio frequency interference with hearing devices
than phones with lower ratings. M4 is the better/higher of the
two ratings. Your M55 is rated M4.
T-Ratings: For phones that use inductive coupling with hearing
devices operating in telecoil mode. Phones rated T3 or T4 meet
FCC HAC requirements and are likely to be more usable with a
hearing aid’s telecoil than phones that are not rated. T4 is the
better/higher of the two ratings. Your M55 is rated T3.
This phone has been tested and rated for use with hearing aids
for some of the wireless technologies that it uses. However,
there may be some newer wireless technologies used in this
phone that have not been tested yet for use with hearing aids. It
is important to try the different features of this phone
thoroughly and in different locations, using your hearing aid or
cochlear implant, to determine if you hear any interfering noise.
Consult your service provider or the manufacturer of this phone
for information on hearing aid compatibility. If you have
questions about return or exchange policies, consult your
service provider or phone retailer.
The ratings are not guarantees. Trying out the phone with your
hearing device is the best way to evaluate it for your personal
needs. Results will vary depending on a user’s hearing device
and hearing loss. For example, if some wireless phones are used
near some hearing devices, users may detect a buzzing,