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Similarly, if the cellular call is disconnected by the
network prior to receipt of the termination tone,
another call to the response center will also
automatically be dialed. The message “REDIAL IN
PROGRESS” will be displayed on the Message
Center and voice communication with an operator
will be restored.
NOTE: During redial calls, full control of the
cellular phone is returned to you. Pressing either
the “PWR” or “END” button on the cellular
handset will terminate the assistance request and
reset the system.
Location Data Retransmit Capability
During an activation, the Lincoln Security Response
Center operator has the capability to initiate a
retransmission of the electronic data message. This
may be necessary to ensure a more precise
determination of vehicle location or to track a
vehicle that is moving. To accomplish the
retransmit, a special tone is sent to the vehicle by
the response center. In this situation you will
temporarily lose voice contact with the operator and
the messages “SENDING LOCATION DATA” and
“DATA RECEIVED” will respectively be displayed
on the Message Center. After the data
retransmission is complete, voice communication
will be restored and the CID, LAT, LON and HDG
message will again alternately toggle on the Message
Center display.
Global Positioning System
Vehicle location is continuously updated via Global
Positioning System (GPS) technology. GPS was
developed by the U.S. Department of Defense for
worldwide navigational and positioning purposes. It
utilizes a constellation of 24 orbiting satellites
located more than 20 thousand kilometers above
the earth. At any given time, several of the 24
satellites should be visible to the vehicle’s GPS
receiver. Based on the time for signals emitted by
these satellites to reach the receiver, an on-board
computer will determine the vehicle’s location,
File:05fncfc.ex
Update:Fri Sep 6 14:53:57 1996
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