Cricket Communications A100 - Manual (Page 53)

Additional safety information
53
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.
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.