Commands not Working Over with UDP

Hi everyone,

I know more than the average person about networking, but not enough to troubleshoot more advanced issues. I'd appreciate your help.

I have a media server and projector on a network. The are hard-wired to the same switch and are on the same vlan.

In the media server software I am able to send commands to the projector via telnet. I'd prefer not to use telnet because it is my understanding that it uses the TCP protocol - and TCP requires constant communication between the two machines. Well, I'm trying to avoid that because I'm told (by much smarter people than I) that these projectors don't like that.

So, I've tried sending the same commands via UDP, but the projectors take no action when the commands are sent - which means they are not actually receiving the commands.

Do any of you have any ideas of what the problem may be? Or some troubleshooting steps?

Edit: And I should clarify - In the media software I'm using I can create "devices". When I create a telnet "device" and send commands that way, it works. When I create a UDP "device" and send the same commands, it does not work.