User manual
MPTP | MPTP commands 25
• Stop trigger :
The tracking process is stopped when this condition is met.
Typical stop triggers include a specific number of reports having been sent, a specific duration of
running having been reached, or reversing the trigger condition which started the process (e.g.
re-entering an area earlier exited).
The Control Centre can remotely set up a tracking process by sending a tracking request MPTP
command. The Mobile Telematics Terminal receiving such a message should then start a new process
with the triggers specified in the request. It is also possible to create a new process locally on the terminal
itself without a Control Centre requesting it.
Process groups
The number of tracking processes which can exist simultaneously on a Mobile Telematics Terminal is
limited. To clarify this, process types have been divided into process groups. Process types within a group
are mutually exclusive so that only one process from a group can exist at a time. An existing process
within a group needs to be stopped before creating a new one.
Group I:
Processes with no start triggers
Group II:
Processes with start triggers
Simple tracking:
– interval in minutes (4.2.1.1)
– interval in seconds (4.2.1.2)
Complex tracking:
– stopping with report limit (4.2.1.4.2)
– stopping at time limit (4.2.1.4.3)
– stopping at date and time ()
– endless tracking (4.2.1.4.5)
Complex tracking:
– area tracking (4.2.1.4.1)
A tracking process which sends its position information over a data call instead of using MPTP commands
exists totally independently of the above grouping and is not limited by it. The only tracking type utilising
this method is real-time tracking.
Tracking of travel marks – waypoints or routes – are not relevant for this grouping.
4.2.1. Tracking requests from Control Centre
Usually, a tracking process is remotely set up by a Control Centre by sending an MPTP command. Any
tracking reports generated by the process are then sent to the Control Centre which created it.
It is also possible for the user of a Mobile Telematics Terminal to set up a tracking process on the terminal
itself. In this case, the Control Centre to which the tracking reports will be sent, needs to be specified. This
feature is discussed in section .