User`s manual

VPort 2141 Video Encoder User’s Manual System Configuration
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System Configuration by Telnet
Telnet Commands
The VPort 2141 has a Telnet daemon that allows administrators to access some seldom used
functions. You will be prompted for a password if you use any general terminal program to
connect to the VPort 2141. The Username is not requested since only administrators can access the
Telnet daemon. The password is the same as that used for web access. After logging in, type
“help” for the command list. If “debug” or “dinote” is not executed, Telnet will disconnect
automatically after being idle for 1 minute.
System Core Debugging
General activities are recorded into SYSTEM.LOG continuously, but information about abnormal
status is not recorded. Administrators can type the “debug” command to examine in-depth core
debugging information. This causes the VPort 2141 to start dumping the detailed debugging
information while the system is running. This is useful for examining if any errors have occurred
when the system operates abnormally. The stored information will be cleared automatically after
the dump. The VPort 2141 will continue to dump new messages unless the connection is broken. If
Telnet is not connected, messages will be stored until administrators re-login.
Monitoring the Status of Digital Inputs
Typing “dinote” will cause the VPort 2141 to send the current status of all digital inputs. After that,
the VPort 2141 will continuously monitor the DI status and send messages only when the state has
changed. For example, after typing “dinote” the terminal will display:
DI1=L
DI2=L
DI3=L
DI4=L
and after DI2 changes to H, the terminal will display
DI2=H