CipherLab Co. Ltd. RS30 Benutzerhandbuch
HEARING AID COMPATIBILITY HAC FOR WIRELESS TELECOMMUNICATIONS
DEVICES
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 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.
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.
To determine the compatibility of a WD and a particular hearing aid, simply add the
numerical part of the hearing aid category (e.g. M2/T2=2) with the numerical part of
the WD emission rating (e.g., M3=3) to arrive at the system classification for this
particular combination of WD and hearing aid. A sum of 5 would indicate that the WD
and hearing aid would provide normal use, and a sum of 6 or greater would indicate
that the WD and hearing aid would provide excellent performance. A category sum of
less than 4 would likely result in a performance that is judged unacceptable by the
hearing aid user.
This phone has been tested and rated for use with hearing aids for some of the wireless
technologies that it uses. However, there may be some newer wireless technologies
used in this phone that have not been tested yet for use with hearing aids. It is
important to try the different features of this phone thoroughly and in different
locations, using your hearing aid or cochlear implant, to determine if you hear any
interfering noise. Consult your service provider or the manufacturer of this phone for
information on hearing aid compatibility. If you have questions about return or
exchange policies, consult your service
THIS PHONE HAS A HAC RATING OF M3/T3