LG 510 Owner's Manual page 72

Safety Information
phones, to assist hearing device users
find phones that may be compatible
with their hearing devices. Not all
phones have been rated. Phones that
are rated have the rating on their box
or a label located on the box.
The ratings are not guarantees.
Results will vary depending on the
user's hearing device and hearing
loss. If your hearing device happens
to be vulnerable to interference, you
may not be able to use a rated phone
successfully. Trying out the phone
with your hearing device is the best
way to evaluate it for your personal
needs.
M-Ratings: Phones rated M3 or M4
meet FCC requirements and are
likely to generate less interference to
hearing devices than phones that are
not labeled. M4 is the better/higher of
the two ratings.
T-Ratings: Phones rated T3 or T4 meet
FCC requirements and are likely to
generate less interference to hearing
devices than phones that are not
labeled. T4 is the better/higher of the
two ratings.
Hearing devices may also be rated.
70
LG 510 | User Guide
Your hearing device manufacturer
or hearing health professional may
help you find this rating. Higher
ratings mean that the hearing device
is relatively immune to interference
noise. The hearing aid and wireless
phone rating values are then added
together. A sum of 5 is considered
acceptable for normal use. A sum of 6
is considered for best use.
In the above example, if a hearing
aid meets the M2 level rating and the
wireless phone meets the M3 level
rating, the sum of the two values
equal M5. This is synonymous for
T ratings. This should provide the
hearing aid user with "normal usage"