User Guide

Important Safety Information 45
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.
M3 + M2 = 5
T3 + T2 = 5
Sprint_L600_IIB_.book Page 45 Thursday, August 15, 2013 5:19 PM
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