GreatCall Jitterbug Manual page 193

FCC Hearing Aid Compatibility (HAC) Regulations for Wireless Devices
The U.S. Federal Communications Commission (FCC) has established
requirements for digital wireless mobile devices to be compatible with hearing
aids and other assistive hearing devices.
When individuals employing some assistive hearing devices (hearing aids and
cochlear implants) use wireless mobile devices, they may detect a buzzing,
humming, or whining noise. Some hearing devices are more immune than
others to this interference noise, and mobile devices also vary in the amount of
interference they generate.
The wireless telephone industry has developed a rating system for wireless
mobile devices to assist hearing device users find mobile devices that may be
compatible with their hearing devices. Not all mobile devices have been rated.
Mobile devices 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
Health and Safety 183