LG LG-M322, User Manual

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For Your Safety 108
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 find this 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 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’s 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.