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CHAPTER 7: UNIX/RTEL Host Setup
In addition, verify that the service is available. Issue the server command
SHOW SERVICE serv_name CHARACTERISTICS. The service port
should be the port the printer is physically connected to and the service
rating should be non-zero.
If the service rating is zero, the service is not available. Verify that the
port is set to access remote or dynamic (see the server commands define
port n access remote or define port n access dynamic).
Log the port out using the command LOGOUT PORT n. This will force
the server to re-evaluate the service rating for port n.
7. Verify that the port characteristics (baud rate, parity, flow control) match
the settings needed for the printer. Remember that these characteristics
need to be both SET and DEFINEd.
8. On the server, use the MONITOR QUEUE command to see if the UNIX
host is attempting to make a connection. When a job is active, the a
queue entry from the UNIX host to the specified service should appear.
9. As a last resort, connect a terminal to port n and see if data is appearing
on the terminal when the EPS attempts a print job. You should also try
connecting to the service locally to verify the ETS’ setup is correct.
If the printer still does not function properly after verifying these
conditions, contact Technical Support.
7.11 Connecting to a Specific Port Using Telnet
You can connect to a specific port on the EPS by using the Telnet command
with the “port number” parameter. For example, to connect to serial port 3
on the EPS, first make sure the port is set to ACCESS REMOTE or ACCESS
DYNAMIC, then issue the command:
% telnet server_name 2003
The number 2003 is the EPS’ base port address 2000 plus the actual port
number 3. For more information about the TELNET command, refer to your
host’s documentation for TELNET. Note also that “raw” TCP connections
(no Telnet character interpretation) are available by using the ports starting
at 3001. Connecting in this manner attaches the telnet session directly to the
port, allowing access to the modem, printer, or terminal device attached to
that port. The EPS will not echo characters unless the device attached to the
serial port echoes data.