Pantech P2000 manual Ansi C63.19 standard, Signal quality that is acceptable for normal operation

humming, or whining noise. Some hearing devices are more immune than others to this interference noise, and phones also vary in the amount of interference they generate.

The wireless telephone industry has developed a rating system for wireless phones, to assist hearing device users find phones that may be compatible with their hearing devices. Not all phones have been rated. Phones that are rated have the rating on their box or a label located on the box.

The ratings are not guarantees. Results will vary 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

164

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.

•T-Ratings:Phones rated T3 or T4 meet FCC requirements and are likely to generate less interference to hearing devices than phones that are not labeled. T4 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 is synonymous for T ratings. 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.

Appendix

The M mark is intended to be synonymous	01
with the U mark. The T mark is intended to
	02
be synonymous with the UT mark. The M and
	03
T marks are recommended by the Alliance
	04
for Telecommunications Industries Solutions
	05
(ATIS). The U and UT marks are referenced in
Section 20.19 of the FCC Rules. The HAC rating	06
and measurement procedure are described	01
in the American National Standards Institute
	02
(ANSI) C63.19 standard.
	03
To ensure that the Hearing Aid Compatibility
	04
rating for your phone is maintained, secondary
	05
transmitters such as Bluetooth and WLAN	06

components must be disabled during a call.		07
See page 75 for instructions to disable these
components.
	165