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is set forth in American National Standard Institute (ANSI) standard
C63.19. There are two sets of ANSI standards with ratings from one to
four (four being the best rating): an “M” rating for reduced
interference making it easier to hear conversations on the phone
when using the hearing aid microphone, and a “T” rating that enables
the phone to be used with hearing aids operating in the telecoil mode
thus reducing unwanted background noise.
HOW WILL I KNOW WHICH WIRELESS PHONES ARE HEARING AID
COMPATIBLE?
The Hearing Aid Compatibility rating is displayed on the wireless
phone box.
A phone is considered Hearing Aid Compatible for acoustic coupling
(microphone mode) if it has an “M3” or “M4” rating. A digital wireless
phone is considered Hearing Aid Compatible for inductive coupling
(telecoil mode) if it has a “T3” or “T4” rating.
The tested M-Rating and T-Rating for this device (FCC ID:
2ABOU8005) are M4 and T4.
HOW WILL I KNOW IF MY HEARING AID WILL WORK WITH A
PARTICULAR DIGITAL WIRELESS PHONE?
You’ll want to try a number of wireless phones so that you can decide
which works the best with your hearing aids. You may also want to
talk with your hearing aid professional about the extent to which your
hearing aids are immune to interference, if they have wireless phone
shielding, and whether your hearing aid has a HAC rating.
