Utstar xv6700 User Manual

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Appendix

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.

FCC Hearing Aid Compatibility and Volume Control:

Gallaudet University, RERC:

Self Help for Hard of Hearing People Inc. [SHHH]

The Hearing Aid Compatibility FCC Order: