User manual

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Hearing Aid Compatibility (HAC) for Wireless Telecommunication
Devices
This phone has a HAC rating of M4/T4.
What is hearing aid compatibility?
The Federal Communications Commission has implemented rules and a
rating system designed to enable people who wear hearing aids to more
effectively use these wireless telecommunications devices. The standard for
compatibility of digital wireless phones with hearing aids is set forth in Amer-
ican 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 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.