Mobility and System Parameters 3-141
March 2009 Chapter 3 - MTP850 Ex/MTP810 Ex Product Information Manual 6866588D21-D
29.4.5 SC Acquisition Timer
If the Subscriber Class (SC) of the terminal has been set, the terminal will always attempt to log onto
a cell that supports this class.
The Field Value determines the period of time that the terminal will search for a cell that support this
class, after which it will register on the best cell even though there is no SC match.
The range is 0 to 300 seconds, the default is 30 seconds.
29.4.6 MLE Sleep Timer
The Field Value entry for the Mobile Link Entity (MLE) defines the period of time the terminal waits
between iterations of frequency list scanning.
Upon power up, or whenever the terminal is not attached to any cell and there are no known suitable
neighbour cells, the terminal begins to scan the frequencies.
After having exhausted all the lists, the terminal waits a provisioned amount of time before beginning
the process again from the first list. This time needs to be carefully balanced between the need to
save battery life and the need to find a system quickly after having lost coverage.
The range is 0 to 60 seconds, the default being 5 seconds.
29.4.7 Type 2 Reselection Enabled
This field needs to always be enabled except for terminals that are working on legacy Dimetra-P
releases.
Turn the check box on (Enable) or off (Disable) by clicking in the check box.
29.5 TXI Parameters (Transmit Inhibit)
Allows setting up parameters of TXI status messages the terminal will send to the dispatcher upon
activation/de-activation of the TXI (Transmit Inhibit) mode.
TXI mode, also called terminal RF (Radio Frequency) SA (Sensitive Area) Mode, is a special
terminal mode where uplink transmission of any type is forbidden except an Emergency call.
The TXI mode is activated by the terminal user in RF sensitive areas, (for example hospitals,
airplanes, and so forth), where safety can be jeopardized due to terminal uplink high radiation.
When no danger to safety exists anymore (for instance if user leaves RF sensitive area), the user
can de-activate TXI mode and return back to normal operation.
Note: If an emergency call caused TXI mode de-activation, no status message will be sent about
TXI deactivation.
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