LG -D631 User Manual page 125

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.
This phone has been tested and rated for use with hearing aids for some of the
wireless technologies that it uses. However, there may be some newer wireless
technologies used in this phone that have not been tested yet for use with hearing aids.
It is important to try the different features of this phone thoroughly and in different
locations, using your hearing aid or cochlear implant, to determine if you hear any
interfering noise. Consult your service provider or the manufacturer of this phone for
information on hearing aid compatibility. If you have questions about return or exchange
Safety Guidelines
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