Samsung SGH-T499MAWTMB - Manual (Page 173)

Health and Safety Information 169
device with your hearing device is the best way to
evaluate it for your personal needs.
M-Ratings: Mobile devices rated M3 or M4 meet FCC
requirements and are likely to generate less
interference to hearing devices than mobile devices
that are not labeled. M4 is the better/higher of the
two ratings.
T-Ratings: Mobile devices rated T3 or T4 meet FCC
requirements and are likely to generate less
interference to hearing devices than mobile devices
that are not labeled. T4 is the better/higher of the two
ratings.
Hearing devices may also be rated. Your hearing
device manufacturer or hearing health professional
may help you find this rating. Higher ratings mean
that the hearing device is relatively immune to
interference noise. The hearing aid and wireless
mobile device rating values are then added together.
A sum of 5 is considered acceptable for normal use.
A sum of 6 is considered for best use. If a hearing aid
meets the M2 level rating and the wireless mobile
device meets the M3 level rating, the sum of the two
values equal M5. This is synonymous for T ratings.
This should provide the hearing aid user with “normal
usage” while using their hearing aid with the
particular wireless mobile device.
“Normal usage” in this context is defined as a signal
quality that is acceptable for normal operation. The M
mark is intended to be synonymous with the U mark.
The T mark is intended to be synonymous with the
UT mark. The M and T marks are recommended by
the Alliance for Telecommunications Industries
Solutions (ATIS). The U and UT marks are referenced
in Section 20.19 of the FCC Rules.
The HAC rating and measurement procedure are
described in the American National Standards
Institute (ANSI) C63.19 standard.
HAC/Wi-Fi for Newer Technologies
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.
M3 + M2 = 5 T3 + T2 =