Pantech Cell phone Manuale Utente

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.

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.

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  FCC Hearing Aid Compatibility and Volume Control

    http://www.fcc.gov/cgb/dro/hearing.html

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  Gallaudet University, RERC

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

•

  Self Help for Hard of Hearing People Inc. [SHHH]

    www.hearingloss.org/hat/TipsWirelessPhones.htm

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  The Hearing Aid Compatibility FCC Order

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