The TTU-2820™ is responsible for delivering the location and status information when
and where it is needed. Data requests mainly come from the following sources:
PEG™ script within the TTU-2820™
A location or status request from the LM Direct™ server
A location or status request from LMU Manager
An SMS request made from a mobile device such as a customer’s cell-phone
In some cases, it is necessary to run an application in the vehicle while it is being tracked
by the backend software. Such examples could include instant messaging between
vehicles or a central office, in-vehicle mapping or driving directions, email or database
access. In most of these cases you will be using the TTU-2820™ as a wireless modem as
well as a vehicle-location device.
] 2.2.3 LM Direct™ Server
LM Direct™ is a CalAmp proprietary message interface specification detailing the
various messages and their contents the TTU-2820™ is capable of sending and receiving.
This interface allows System Integrators to communicate directly with TTU-2820's™.
Please refer to the
] 2.2.4 Backend Software
Backend software is a customer provided software application. Regardless of its purpose,
one of its primary functions is to parse and present data obtained from the LM Direct™
server. This allows the application to do any of the following:
Display location database on reports received from the TTU-2820™ in a variety
of formats
Present historic information received from the TTU-2820™, typically in a
report/chart style format
Request location updates from one or more TTU-2820s™
Update and change the configuration of one or more TTU-2820s™
] 2.2.5 PULS™
PULS™ (Programming, Update and Logistics System) is CalAmp’s web-based
maintenance server offering out-of-the-box hands free configuration and automatic post-
installation upgrades. PULS™ provides a means for configuration parameters, PEG
scripts, and firmware to be updated Over-The-Air (OTA) and allows CalAmp customers
