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– M-Ratings: Phones rated M3 or M4 meet FCC requirements and are
likely to generate less interference to hearing devices than phones that
are not labeled. M4 is the better/higher of the two ratings.
– T-Ratings: Phones rated T3 or T4 meet FCC requirements and are
likely to generate less interference to hearing devices than phones 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 findthis rating. Higher
ratings mean that the hearing device is relatively immune to interference
noise. The hearing aid and wireless phone 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.
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 is synonymous for T ratings. 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.
To ensure that the Hearing Aid Compatibility rating for your phone
is maintained, secondary transmitters such as Bluetooth and WLAN
components must be disabled during a call. See Page XX for instructions
to disable these components.
FCC Regulatory Compliance
FCC Regulatory Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Your mobile device is a low power radio transmitter and receiver. When
it is ON, it receives and also sends out radio frequency (RF) signals.
In August 1996, the Federal Communications Commission (FCC)
adopted RF exposure guidelines with safety levels for mobile devices.
Those guidelines are consistent with safety standards previously set
by both U.S. and international standards bodies: American National
Standard Institute (ANSI), National Council of Radiation Protection
and Measurements(NCRP), and International Commission on Non-
Ionizing Radiation Protection (ICNRP). Those standards were based
on comprehensive and periodic evaluations of the relevant scientific
literature. The design of your phone complies with the FCC guidelines
and applicable.