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

20.19of 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 http://tap.Gallaudet.edu/DigWireless.KS/DigWireless.htm

Hearing Loss Association of America [HLAA] http://www.hearingloss.org/learn/cellphonetech.asp

The Hearing Aid Compatibility FCC Order http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-03- 168A1.pdf

Safety

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LG Electronics MMBB0309801(1.0) H manual Marks are referenced in Section