users may detect a buzzing, 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
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