SMTX s758, User Manual, Page: 55 / 57

together. A sum of 5 is considered
acceptable for normal use. A sum of
6 is considered for better use. A
sum of 8 is considered for best use.
In the above example, if a hearing
aid meets the M2 level rating and
the wireless phone meets the M3
level rating, the sum of the two
values equal M5. This should
provide the hearing aid user with
“normal usage” while using their
hearing aid with the particular
wireless phone. “Normal usage” in
this context is defined as a signal
quality that is acceptable for normal
operation. This methodology applies
equally for T ratings. The M mark is
intended to be synonymous with the
U mark. The T mark is intended to
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