Samsung SCH-R970ZKAUSC - Manual (Page 209)

Health and Safety Information 203
is the better/higher of the two ratings. T-ratings refer to
enabling inductive coupling with hearing aids operating in
telecoil mode.
Hearing devices may also be rated. Your hearing aid
manufacturer or hearing health professional may help you
find this rating. Higher ratings mean that the hearing device
is relatively immune to interference noise.
Under the current industry standard, American National
Standards Institute (ANSI) C63.19, the hearing aid and
wireless mobile device rating values are added together to
indicate how usable they are together. For example, 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 equals M5.
Under the standard, this should provide the hearing aid user
with normal use while using the hearing aid with the
particular wireless mobile device. A sum of 6 or more would
indicate excellent performance.
However, these are not guarantees that all users will be
satisfied. T ratings work similarly.
The HAC rating and measurement procedure are described in
the American National Standards Institute (ANSI) C63.19
standard.
HAC 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
M3 + M2 = 5
T3 + T2 = 5