Sharp STX-2 User Manual page 168

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Generally, the rules require that carriers identify an E911 caller's location
within 50 meters of the actual location for 67 percent of calls and within
150 meters of the actual location for 95 percent of calls. SHARP FX's ALI
Capability.
The SHARP FX is an ALI-capable phone equipped with a GPS (Global
Positioning System) receiver supporting a satellite-based GPS ALI-
capable network to comply with the FCC's ALI requirements.
The network compliance with the above FCC requirements is dependent
on: (a) the use of digital technology by the wireless network: (b) GPS
satellite signals being able to reach the handset (such transmissions do
not always work indoors, for example) : and (c) handset signals reaching
wireless "base stations" (atmospheric and environmental conditions
may cause variations in handset receiving signal strength).
Also the transmission of the ALI information is subject, in part, to system
constraints within the wireless network to which the E911 signal is
transmitted and over which SHARP FX has no control.
Finally, customers are advised that the SHARP FX's ALI capability is to be
used for E911 purposes only.
This feature allows you to place an emergency call even if your phone is
in "Phone Lock" or "Restrict" mode when you dial the preprogrammed
emergency number, 911, #911, or *911. It also operates in out-of-
service areas. The phone maintains the emergency mode until you press
Power/END Key
the
emergency call mode, the phone can receive an incoming call from any
available system.
after disconnecting an emergency call. In
SAFETY
167
167

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