Patton electronic 2120 사용자 설명서

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trolled by two ASCII characters, 0x11 (XON) and 0x13 (XOFF). These 
characters are fixed and not configurable in the Model 2120.  The XON 
and XOFF characters are simply sent through the data stream, in other 
words, they look like data.  To stop receiving data, XOFF is sent to the 
sender and the sender stops sending data until it receives an XON (in 
most cases).

When no (none) flow control is selected, the flow of data between the 
Model 2120 and the device connected to the serial interface is not man-
aged, therefore, it is possible for the buffers to overflow causing the loss 
of data.

Session control is essential for PPP and SLIP applications.  A PPP/SLIP 
session must be terminated before the user leaves, otherwise another 
user may continue in that same session, which is not good from a secu-
rity standpoint.  The DTR (Data Terminal Ready) and DSR (Data Set 
Ready) control signals are used for terminating a SLIP or PPP session.  
If the user is configured for DTE operations and wishes to disconnect the 
session, the DTE will turn DTR off for 2 seconds.  If the user configured 
is for DCE operations, the DCE will turn DSR off for 2 seconds to termi-
nate SLIP and PPP connections.

The Model 2120 features the ability to remotely execute and view any or 
all configuration parameter settings and operational status of the Model 
2120 unit by using the system "show" commands.  For a detailed defini-
tion of all 2120 system show commands, see Appendix B on page 59.

The Model 2120 features integrated utility features to perform a variety of 
functions from the Model 2120 command system prompt.

The "boot" command allows the Model 2120 to be rebooted remotely 
over the LAN.  When performed, the remote connection to the Model 
2120 is lost. The following illustrates how to issue the "boot" command: