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Windows NT network communication

Basic concepts of TCP/IP printing

In Windows NT, printing via TCP/IP is accomplished using the LPR (Line Printer Request) 
protocol.  Because LPR was developed for UNIX systems, comparing Windows NT and 
UNIX implementations may be helpful.  

The LPR protocol is a host-to-host protocol, rather than a host-to-printer protocol.  When 
printing via LPR, the computer sending the print job assumes that it is sending the job to 
another computer, or print server, which sends the job to the printer.  In UNIX 
terminology, the print server is called a remote host.  The print server can have several 
printers connected to it.  The way to differentiate between different printers when 
spooling to the print server is to print to a specific remote queue. 

The following table summarizes these concepts of TCP/IP printing and the terminology 
used in UNIX and Windows NT environments.        

Your Tektronix printer emulates a print server.  Tektronix printers are accessed by giving 
an NT host a remote host name that will point to the printer.  This is true only if the print 
job is spooled directly to the printer via its internal network interface, and not through an 
external third-party print server.  If the print job is spooled through an external third-party 
print server, the remote host name is the TCP/IP address of the print server and the remote 
queue name is the name of the queue for that print server.

Print server

An IP address or a DNS name 
that is mapped to this address.  
This is how your computer 
knows where to send the print 
job.

Remote host

Print queue

For Tektronix printers, this is PS 
(PostScript) or AUTO 
(AutoSelect).

Remote printer 
queue name