Xerox Phaser 6180N won't print from DOS COPY

I have a Xerox Phaser 6180N laser printer connected to lpt3.

I can print to it from a DOS accounting app that my company uses. However,
I'm trying to send a control code to select the multi purpose bypass tray. I
haven't been able to do so, so I tested sending a text file by using:

"COPY filename.txt lpt3" and "COPY filename.txt lpt3 /b"

Neither command or any version of it works. The control panel displays
"Cancelling job..." The same thing happens when I use the PRINT command.

Any ideas about what the problem is?

Disregard. I determined the resolution.

"WCI" <REMOVEemail.DeleteThis@woodcraftindustriesinc.com> wrote in message
news:QmeAj.12171$Ru4.6927@newssvr19.news.prodigy.net...
>I have a Xerox Phaser 6180N laser printer connected to lpt3.
>
> I can print to it from a DOS accounting app that my company uses. However,
> I'm trying to send a control code to select the multi purpose bypass tray.
> I haven't been able to do so, so I tested sending a text file by using:
>
> "COPY filename.txt lpt3" and "COPY filename.txt lpt3 /b"
>
> Neither command or any version of it works. The control panel displays
> "Cancelling job..." The same thing happens when I use the PRINT command.
>
> Any ideas about what the problem is?
>