MS345 User Manual

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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’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.

Forinformationabouthearingaidsanddigitalwirelessphones:

Wireless Phones and Hearing Aid Accessibility

http://www.accesswireless.org/

Gallaudet University, RERC

http://tap.gallaudet.edu/Voice/

FCC Hearing Aid Compatibility and Volume Control

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

The Hearing Aid Compatibility FCC Order

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

Hearing Loss Association of America [HLAA]

http://hearingloss.org/content/telephones-and-mobile-devices

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User Manual - Page 99