Verykool s757 - Manual (Page 31)

User Manual
device and hearing loss. If your hearing device happens to be vulnerable to interference, you may
not be able to use a rated phone successfully. Trying out the phone with your hearing device is the
best way to evaluate it for your personal
needs.
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 rated. M4 is the better/higher of the two
ratings.
S757 is rated M3.
T-Ratings: Phones rated T3 or T4 meet FCC requirements and are likely to be more
usable with a hearing aid’s telecoil than phones that are not rated. T4 is the better/higher
of the two ratings.
S757 is rated T3.
Please power off the Bluetooth function while using hearing aid devices with your S757.
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.
Safety and regulatory guide
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 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 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.
For information about hearing aids and digital wireless phones
FCC Hearing Aid Compatibility and Volume Control:
http://www.fcc.gov/cgb/dro/hearing.html
Gallaudet University, RERC:
https://fjallfoss.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
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