UTStarcom PPC-6700 User Manual

Page 140

background image




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


For information about hearing aids and digital wireless phones

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: