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Safety Guidelines
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better/higher of the two ratings.
T-Ratings: Phones rated T3 or T4 meet FCC
requirements and are likely to be
more usable with a hearing
device’s telecoil (“T Switch” or
“Telephone Switch”) than unrated
phones. T4 is the better/higher of
the two ratings. (Note that not all
hearing devices have telecoils in
them.)
Hearing devices may also be measured for
immunity to this type of interference. Your
hearing device manufacturer or hearing health
professional may help you find results for your
hearing device. The more immune your hearing
aid is, the less likely you are to experience
interference noise from mobile phones.
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.
See Page 69 for instructions to disable these
components.
CE110_Eng_0813 8/17/07 2:25 PM Page 84