User manual

250 Using Your Treo 700w Smartphone
Regulatory Information
NOTICE FOR CONSUMERS WITH HEARING DISABILITIES
Digital Wireless Phones to be Compatible with Hearing Aids
On July 10, 2003, the Federal Communications Commission
(FCC) modified the exemption for wireless phones under the
Hearing Aid Compatibility Act of 1988. This means that wireless
phone manufacturers and service providers must make digital
wireless phones accessible to individuals who use hearing aids.
For more information, please go to the FCC’s Consumer Alert
on accessibility of digital wireless phones at http://www.fcc.gov/
cgb/consumerfacts/accessiblewireless.html.
Wireless telephones are hand-held phones with built-in
antennas, often called cell, mobile, or PCS phones. These phones
are popular with callers because they can be carried easily from
place to place.
Wireless telephones are two-way radios. When you talk into a
wireless telephone, it picks up your voice and converts the sound
to radio frequency energy (or radio waves). The radio waves
travel through the air until they reach a receiver at a nearby base
station. The base station then sends your call through the
telephone network until it reaches the person you are calling.
When you receive a call on your wireless telephone, the
message travels through the telephone network until it reaches a
base station close to your wireless phone. Then the base station
sends out radio waves that are detected by a receiver in your
telephone, where the signals are changed back into the sound of
a voice.