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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 contain
telecoils.) The more immune your hearing aid device is,
the less likely you are to experience interference noise
from your wireless phone.
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.
For additional information about the FCC's actions with
regard to hearing aid compatible wireless devices and
other steps the FCC has taken to ensure that individuals
with disabilities have access to telecommunications
services, please go to www.fcc.gov/cgb/dro.
Turning on the HAC Setting
When the HAC setting is on, your Adamant
TM
sends the
audio from your phone calls to the telecoil rather than to
the microphone of your hearing aid. You are likely to hear
calls much better because volume is increased and
background noise and feedback are diminished. The HAC
setting improves only the calls you listen to through the
earpiece. It does not affect calls heard on the
speakerphone or with a headset. HAC requires extra
battery power, so watch your battery consumption when
it's turned on.
