F350 User Manual
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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 aid devices should have ratings similar to those of
phones. Ask your hearing health-care professional for the rating of your hearing aid.
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 wireless devices.
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.
Turn on the HAC Setting
When the HAC setting is on, your F350 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. Turn off the Bluetooth function. 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.
