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MSS User Guide 4: Configuration
4-16
Figure 4-57: Enabling DSRLogout for MSS100
Local>> CHANGE DSRLOGOUT ENABLED
DTRWait
Note: DTRWait is not available in RS-485 mode.
Spurious characters from the modem may be interpreted as a user login, which could
cause the port to be unavailable for connections. To avoid this behavior, the MSS uses
the Data Transmit Ready (DTR) output line to signal the serial device that a connection is
possible or acceptable.
Normally DTR will be asserted when the port is idle, which allows devices to answer an
incoming connection; many devices will not do so unless DTR is asserted. The DTRWait
feature keeps the MSS from asserting DTR until the port is actually in use (whether due
to a login or a network connection). To control DTRWait, use the Change Port DTRWait
command.
Figure 4-58: Enabling DTRWait for MSS-VIA and MSS4
Local>> CHANGE PORT 1 DTRWAIT ENABLED
Figure 4-59: Enabling DTRWait for MSS100
Local>> CHANGE DTRWAIT ENABLED
The MSS will generally assert DTR when a connection begins and de-assert DTR when
the connection ends.
Logouts
In addition to DSRLogouts, the port can be manually logged out, or it can be configured
to automatically log out when it has been inactive for a pre-determined length of time. To
manually log out of the MSS, type Logout at the Local> prompt, or press Ctrl-D.
Figure 4-60: Logging out of the MSS
Local>> LOGOUT
To log out the port after a specified period of inactivity, use the Change Port Inactive
Logout command. This command works in conjunction with Change Server Inactive
Timer, which defines how long a port must remain idle before it is automatically logged
out.
For example, to make the MSS log out the port after two minutes of inactivity, use the
following commands. The inactivity logout timer period can be specified in seconds (s) or
minutes (m). For example, changing 1m in the example to 60s produces the same
results.
Figure 4-61: Enabling Timed Inactivity Logout for MSS-VIA and MSS4
Local>> CHANGE PORT 1 INACTIVE LOGOUT ENABLED
Local>> CHANGE SERVER INACTIVE TIMER 1m
Figure 4-62: Enabling Timed Inactivity Logout for MSS100
Local>> CHANGE INACTIVE LOGOUT ENABLED
Local>> CHANGE INACTIVE TIMER 1m