ZTE Corporation A410 Manuale Utente

Note

 

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Additional safety information

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.  
Hearing devices may also be rated. 
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 should provide the 
hearing aid user with “normal usage” 
while using their hearing aid with the 
particular wireless phone. “Normal 
usage” in this context is defined as 
a signal quality that is acceptable 
for normal operation. The M mark is 
intended to be synonymous with the 
U mark. The T mark is intended to be 
synonymous with the UT mark. The 
M and T marks are recommended by 
the Alliance for Telecommunications 
Industries Solutions (ATIS). The U and 
UT marks are referenced in Section 
20.19 of the FCC Rules. The HAC  
rating and measurement procedure 
are described in the American 
National Standards Institute (ANSI) 
C63.19 standard.

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