SAFETY

 

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.

SAF

The M mark is intended to be synonymous with the

ET

U mark. The T mark is intended to be synonymous

Y

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.

When you're talking over the cell phone, it's recommended you'd turn the Bluetooth mode off for HAC.

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

http://tap.gallaudet.edu/DigWireless.KS/DigWireless.htm

HLAA (Hearing Loss Association of America)

http://www.hearingloss.org/learn/cellphonetech.asp

The Hearing Aid Compatibility FCC Order

http://hraunfoss.fcc.gov/edocs_public/attachmatc h/FCC-03-168A1.pdf

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LG Electronics 355 manual Usage while using their hearing aid with, Context is defined as a signal quality that is