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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 tele-coil 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 (tele-coil mode) if it has a “T3” or “T4” rating.

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.

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