C3IGateway Operation
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The C3IWireless Gateway product line sends data to a master communications
station via a digipeater network Each unit has an individual identification number
station via a digipeater network. Each unit has an individual identification number.
When data is needed from a unit, the computer polls the unit through the assigned
digipeater path.
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A digipeater is a unit that retransmits packet data. For example, if data is needed
from unit ID 500, and the closest digipeater that has been assigned is unit ID 20, the
transmissions will route as follows:
transmissions will route as follows:
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POLL MESSAGE FROM MASTER TO DIGIPEATER ID 20
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POLL MESSAGE FROM DIGIPEATER ID 20 TO UNIT ID 500
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RESPONSE MESSAGE FROM UNIT ID 500 TO DIGIPEATER ID 20
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RESPONSE MESSAGE FROM DIGIPEATER ID 20 TO MASTER COMPUTER
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RESPONSE MESSAGE FROM DIGIPEATER ID 20 TO MASTER COMPUTER
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Note: If the communications path fails, the computer will retry the route up to the
specified number of retries before trying the alternate digipeater path.
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An alternate digipeater path would be the next best routing path determined by
terrain, building, and distance issues. This alternate path can be entered into
g
p
software so the system can automatically switch to it in case the primary digipeater
path fails.
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If the unit fails to communicate after both digipeater paths have been tried the
appropriate number of times, the unit ID will be added to the error log.