Printronix Integrated Network Interface Card - Manual (Page 128)

Chapter 5 Solaris 2.6 – 7 NIC Setup
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10. Close the FTP session, unless you have more jobs to print.
Syntax:
quit
Direct Socket Printing
Within TCP/IP environments, there are some setups which require
the host to print directly to a TCP port number on the NIC,
bypassing all of the higher level destination/queue names. If you
run into a setup which requires this, you will need to define two
parameters for a new print setup:
1. NIC IP address. The IP address or host name of the print
server to which you want to print.
2. NIC TCP port number. A pre-defined number for the I/O port
on the print server. 9100 is the default port number.
Though the host will be sending directly to a TCP port number on
the NIC, the port numbers are still mapped to destinations/queues
in case there is some type of special processing or logging to be
done to the job. However, the destination name is of no concern in
this type of printer definition. Only the two parameters mentioned
above need to be defined for printing to work.