5
Telephone Use
Your hearing instrument allows you to use the phone as you
normally do – holding the phone up to your ear. In some
cases, you may need your hearing instrument programmed
with a specific telephone setting. If this feature is important
to you, ask your hearing healthcare professional to adjust
one of the available memory programs to assist your
telephone requirements.
Cell Phone Compatibility
Some hearing aid users have reported a buzzing sound
in their hearing aids when they are using cell phones,
indicating that the cell phone and hearing aid may not
be compatible. According to the ANSI C63.19 standard
(ANSI C63.19- 2006 American National Standard
Methods of Measurement of Compatibility Between
Wireless Communications Devices and Hearing Aids),
the compatibility of a particular hearing aid and cell phone
can be predicted by adding the rating for the hearing aid
immunity to the rating for the cell phone emissions. For
example, the sum of a hearing aid rating of 2 (M2/T2) and
a telephone rating of 3 (M3/T3) would result in a combined
rating of 5. Any combined rating that equals at least 5 would
provide “normal use;” a combined rating of 6 or greater
would indicate “excellent performance.”
The immunity of this hearing aid is at least M2/T2. The
equipment performance measurements, categories and
system classifications are based upon the best information
available but cannot guarantee that all users will be satisfied.
