User`s guide

Configuration from iDigi Manager Pro
58
SureLink settings
Digi SureLink™ is an optional feature that monitors the integrity of an established network
connection. Several settings and tests can be configured to perform a selected test to examine the
functional integrity of the network connection, and take action to recover the connection in the
event that it is lost.
Currently SureLink is supported for cellular communications only.
The SureLink settings can be configured to perform a selected test to examine the functional
integrity of the network connection, and take action to recover the connection in the event that it is
lost.
 SureLink enable: Enables or disables the SureLink feature and the specified link
integrity monitoring tests. The default is off (disabled).
 Test interval: The interval, in seconds, at which the selected test is initiated (repeated).
A new test will be started every N seconds while the mobile connection is established.
This value must be between 10 and 65535. The default is 240. This setting is used by
Ping, TCP Connection, and DNS Lookup tests only, not iDigi Connection.
If the configured interval is less time than it takes a test to complete, the next test will
not be initiated until the previous (current) test has completed.
 Test only if link is idle: Whether the test repeat interval (above) is to be used as an idle
period interval. That is, initiate the selected link integrity test only after no data has been
received for the specified interval of time. This changes the behavior of the test in that
the test interval varies according to the presence of other data received from the mobile
connection. This setting is used by Ping, TCP Connection, and DNS Lookup tests only,
not iDigi Connection.
Although using this idle option may result in less data being exchanged over the mobile
connection, it also prevents the link integrity tests from running as often to verify the
true bi-directional state of that connection.
 Number of consecutive failures to cause recovery action: Specifies that after the
configured number of consecutive link integrity test failures, the mobile connection
should be disconnected and reestablished. This value must be between 1 and 255. The
default is 3. When the mobile connection is reestablished, the “consecutive failures”
counter is reset to zero.
If the mobile connection is disconnected for any reason (including not as a result of a
link integrity test failure), the consecutive failures count is reset to zero when the mobile
connection is reestablished.