Samsung SCH-S720C User Manual
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130FCC Hearing Aid Compatibility (HAC)Regulations for Wireless DevicesThe U.S. Federal Communications Commission (FCC) hasestablished requirements for digital wireless mobile devices to becompatible with hearing aids and other assistive hearing devices.When individuals employing some assistive hearing devices(hearing aids and cochlear implants) use wireless mobiledevices, they may detect a buzzing, humming, or whining noise.Some hearing devices are more immune than others to thisinterference noise, and mobile devices also vary in the amount ofinterference they generate.The wireless telephone industry has developed a rating systemfor wireless mobile devices to assist hearing device users findmobile devices that may be compatible with their hearingdevices. Not all mobile devices have been rated. Mobile devicesthat are rated have the rating on their box or a label located onthe box.The ratings are not guarantees. Results will vary depending onthe user's hearing device and hearing loss. If your hearing devicehappens to be vulnerable to interference, you may not be able touse a rated mobile device successfully. Trying out the mobiledevice with your hearing device is the best way to evaluate it foryour personal needs.M-Ratings: Wireless mobile devices rated M3 or M4 meet FCCrequirements and are likely to generate less interference tohearing devices than mobile devices that are not labeled. M4 isthe better/higher of the two ratings. M-ratings refer to enablingacoustic coupling with hearing aids that do not operate in telecoilmode.T-Ratings: Mobile devices rated T3 or T4 meet FCC requirementsand are likely to generate less interference to hearing devicesthan mobile devices that are not labeled. T4 is the better/higherof the two ratings. T-ratings refer to enabling inductive couplingwith hearing aids operating in telecoil mode.Hearing devices may also be rated. Your hearing aidmanufacturer or hearing health professional may help you findthis rating. Higher ratings mean that the hearing device isrelatively immune to interference noise.Under the current industry standard, American NationalStandards Institute (ANSI) C63.19, the hearing aid and wirelessmobile device rating values are added together to indicate howusable they are together. For example, if a hearing aid meets theM2 level rating and the wireless mobile device meets the M3level rating, the sum of the two values equals M5.Under the standard, this should provide the hearing aid user withnormal use while using the hearing aid with the particular |
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