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Iridium Listening
If enabled,
Iridium Listening
will cause the station to keep the Iridium modem on all the time. This results
in messages sent to the station being received near immediately. This reduces the data costs associated
with connecting to the Iridium gateway in order to check messages. In this mode, the station will reset the
modem once a day for reliability, resulting in at least one connection to the gateway daily.
The downside to enabling Listening is increased power draw.
Iridium Msg Interval
Please note that even with Listening disabled, the station will still check for messages periodically. A
message checks happens with every transmission. If scheduled transmissions are disabled, message
checking still happens every Msg Interval
.
The
message checking may not be disabled without disabling
the whole modem. Message checking will happen at least once a day.
Message checking happens even if
recording is off.
Message checking will NOT happen if the transmission interval is faster than
Msg Interval
. This is because
every transmission already includes a message check.
If a unit is setup with a
Scheduled Interval
of 1 hour and a
Msg Interval
of 15 minutes:
00:15:00 - Message Check
00:30:00 - Message Check
00:45:00 - Message Check
01:00:00 - Transmission and Message Check- No additional message checking required
00:15:00 - Messages Check
With a
Scheduled Interval
of one hour and a
Msg Interval
of 24 hours, no additional message checking
occurs:
23:00:00 - Transmission and Message Check - No additional message checking required
00:00:00 - Transmission and Message Check - No additional message checking required
01:00:00 - Transmission and Message Check - No additional message checking required
The message check serves several purposes:
It prevents the customer from permanently severing the remote connection.
It allows stations to go into lower power mode than if
Listening
were enabled.
Please note that message checking is not scheduled to occur at a specific time. Message checking is
guaranteed to happen at least every Msg Interval. It is not scheduled to happen at the top of the hour or
at any other time. If the interval is set to an hour, it means that it may take up to an hour for a message to
be received. It does NOT mean that it will happen at the top of every hour.
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