User's Manual
80-J7615-1 Rev. A MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 1-3
How the Trailer Tracks Service Works What is the Trailer Tracks Service?
What is the Trailer Tracks Service?
The Trailer Tracks service is networking technology and hardware components installed on a
customer’s trailer/container. The hardware works to send information to customers over a
terrestrial network and also computes vehicle location information using GPS technology.
The GPS and Terrestrial Wireless Network Systems
The TT210 system uses GPS to locate the trailer/container and a wireless communication
network to communicate information about the trailer/container to the customer.
The Global Positioning System
Originally created for and used by the military, the Global Positioning System (GPS) is a
worldwide radio-navigation system formed from a constellation of satellites and ground
stations. GPS uses the satellites as reference points to calculate positions accurate within a
few meters. Essentially, GPS allows nearly every area of the planet to have a unique
address.
How the TT210 System Uses GPS
Signals received from at least three GPS satellites determine the TT210 system terminal’s
(i.e., trailer’s/container’s) location. The internal antenna for the TT210 system receives the
GPS signals. The GPS receiver resides inside the TT210 system terminal to determine the
trailer’s/container’s position. It can receive information from up to 12 satellites at a time. The
GPS receiver calculates the trailer’s/container’s location based on the time that signals are
received from the various satellites. The trailer’s/container’s location is then available for
transfer to the NMC and the customer via the terrestrial wireless network.
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TT210 solution
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