Sonic Cheer 20, User Manual

Page: 52 / 64

52
SONIC
For a hearing aid with both acoustic coupling and telecoil
coupling with a rating of M4/T2 and with a telephone
rating of M3/T3, the combined rating is 7
(M4 + M3) for the acoustic coupling and 5
(T2 + T3) for the telecoil coupling. According to the
guideline given above, both types of coupling will thereby
be acceptable, with the acoustic coupling indicating
excellent performance and the telecoil coupling
indicating normal use. The above equipment
performance measurements, categories and system
classifications are based upon the best information
available, but it cannot be guaranteed that all users will
be satisfied.
The immunity of all Sonic hearing instrument models
covered by these instructions for use is at least M2/T2.
Important Notice
The performance of individual hearing instruments
may vary with individual cell phones. Therefore, please
try this hearing instrument with your mobile phone or,
if you are purchasing a new phone, be sure to try it
with your hearing instrument prior to purchase. For
additional guidance, please ask your cell phone
provider for the booklet entitled “Hearing Aid
Compatibility with Digital Wireless Cell Phones”.