Epson C82332 - Manual (Page 60)

For programmers’ information, the Ethernet Card TCP/IP mode
responds only to arp packets and to TCP/IP connections made to
port (socket) x0203, and ftp socket. Connection attempts to other
port addresses will meet with no response. All data arriving at this
port is assumed to be following valid lpr protocol, and therefore
you cannot just send data to this port.
Instead of lpr, which may strip control characters, (use - 1 to avoid
this), ftp may be used to print. Enter ftp, then open the Ethernet
Card by entering its host name (for example, “open Allison”). A
file may be printed simply by sending it (“send filename”). You
can use console commands or Scripts to automate this process, and
create ftp spool queues.
Both ftp and lpr have output filters available, which are capable of:
translating a UNIX line-end to a normal line-end by inserting a
carriage return byte
sending a form feed at the end of a file in order to eject a page.
The means of invoking these filters differ between ftp and lpr as
follows:
ftp (line ending)
As default, ftp runs with binary file transfer. This may be changed
to ASCII file transfer by simply entering the command “ASCII” on
the ftp command line. When in ASCII mode, the Ethernet Card
will convert incoming UNIX line-ends to include a carriage return.
To change back to BINARY mode, enter the command “BINARY”
on the ftp command line.
5-6 Installing in UNIX