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Chapter 6 - Pass-Through Mode
SNMP Access Gateway User’s Manual - v1.0 -- 11/99 - Page 23
In pass-through access mode, each character the user inputs by network connection is passed to the serial I/O port,
and each character which is received by the serial I/O port is passed through to the network connection. During this
time, the data from the port is NOT processed by the event and alarm evaluator, so no alarm records are detected
during this pass-through access.
If more than one network connection is established for a serial I/O port (the ‘join’ has been used) then each character
which is received from the serial I/O port is sent to each participant, and each character received from each
participant is sent to each other participant and the serial I/O port. Joins may be used to observe the use of the pass-
through mode by another user, for technical support or other purposes.
When joined, breaking a pass-through connection only affects the connection on which the escape sequence (or
network or modem disconnection) was used. The other participants in the joined connection do not have their pass-
through access terminated. When the last participant in a joined connection terminates the pass-through connection,
then the serial I/O port reverts to the normal data collection mode automatically.
Pass-through access to serial I/O ports in console mode may also be made. See the section on console mode for
more information on how pass-through connections are handled when the serial I/O ports are in console mode.
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