i have a siemens router with a printer port and it has a linux setup screen. since i am now moving my printers to work off this port i realize i dont know what to put on the setup screen. maybe im just tired but its like this,
Printer
Unix
Logical Printers

----- Pre-string (HEX)--- Post-string (HEX)----LF to CR/ lf

L1 __________________ __________________ Enable
L2 ________________ __________________ Enable
L3 _______________ ____________________ Enable

with empty input boxes for pre string and post string and check box for the lf to crlf. to be honest with you i have had limited printer exp. with linux: i had a couple of printers that i couldnt get to work right with cups or the other one, and my epson laser that seems to print as easily as hooking up the cable. right now im using cups. anf with the printer hookedd up to the router it isnt detected. but i havent filled in those blanks on the router yet

the help page gives this:
Logical Printers Logical printers are used under Unix. If not using Unix LPD printing, these settings have no effect.
L1, L2, L3 There are 3 logical printers, named L1, L2, and L3. These names can not be changed, and must be used when selecting the logical printer from your Unix system.
Pre-string Enter (in HEX) the series of printer commands to be sent to the attached printer BEFORE each print job.
Post-string Enter (in HEX) the series of printer commands to be sent to the attached printer AFTER each print job.
LF to CR/LF If checked, Unix-style LF (line feed) characters at the end of each line will be converted to CR/LF (carriage return/line feed) pairs, as used in MSDOS and Windows.

so if im usig cups this shouldnt matter and it should just work? but it doesnt. i checked with windows and it works