0102030405060708107107provide the hearing aid user with “normal usage” while using their hearing aid with the particularwireless phone. “Normal usage” in this context is defined as a signal quality that is acceptable fornormal operation.The M mark is intended to be synonymous with the U mark. The T mark is intended to besynonymous with the UT mark. The M and T marks are recommended by the Alliance forTelecommunications Industries Solutions (ATIS). The U and UT marks are referenced in Section20.19 of the FCC Rules. The HAC rating and measurement procedure are described in theAmerican National Standards Institute (ANSI) C63.19 standard.To ensure that the Hearing Aid Compatibility rating for your phone is maintained, secondarytransmitters such as Bluetooth and WLAN components must be disabled during a call. See Page62 for instructions to disable these components.FCC Regulatory ComplianceFCC Regulatory ComplianceThis device complies with Part 15 of the FCC Rules. Operation is subject to the following twoconditions: (1) this device may not cause harmful interference, and (2) this device must acceptany interference received, including interference that may cause undesired operation.Your mobile device is a low power radio transmitter and receiver. When it is ON, it receives and alsosends out radio frequency (RF) signals. In August 1996, the Federal Communications Commission(FCC) adopted RF exposure guidelines with safety levels for mobile devices. Those guidelinesare consistent with safety standards previously set by both U.S. and international standardsbodies: American National Standard Institute (ANSI), National Council of Radiation Protectionand Measurements (NCRP), and International Commission on Non-Ionizing Radiation Protection(ICNRP). Those standards were based on comprehensive and periodic evaluations of the relevantscientific literature. The design of your phone complies with the FCC guidelines and applicable.