Reduce interference to hearing technologies (including hearing aids, cochlear implants, and assistive listening devices) to the lowest possible level that allows a user to utilize the product.
1. Individuals who are hard of hearing use hearing aids and
other assistive listening devices but these devices cannot be used if a
telecommunications product introduces noise into the listening aids because of
stray electromagnetic interference.
2. Strategies for reducing this interference (as well as
improving hearing aid immunity) are being researched. The most desirable
strategy is to avoid the root causes of
interference when a product is initially designed. If the root sources of
interference cannot be removed, then shielding,
placement of components to avoid
hearing aid interference, and field-canceling
techniques may be effective. Standards are being developed to limit interference
to acceptable levels, but complete elimination for some technologies may not yet
be practical.
3. In April 1996, the American National Standards Institute (ANSI) established a task group (ANSI C63) under its subcommittee on medical devices to develop standards to measure hearing aid compatibility and accessibility to digital wireless telecommunications. The C63.19 task group is continuing to develop its standard, C63.19-199X, American National Standard for Methods of Measurement for Hearing Aid Compatibility with Wireless Communications Devices. When the standard is completed, the Board intends to reference it.
Modems.(but not necessarily the attached computers and monitors)
PBXs.