Hmm, you can try it the Hard way, using Etherpeek ...
I spent a week beside a colorcopier talking via ethernet to learn its protocol ...
Ahhh long time ago :-)

But i guess you just have to nag the empeg people, otherwise give it a try with etherpeek ... maybe the protocol is realy easy ...

Nils
Ooops i hope this is not illegal or unwanted, if yes, please delete it from the protocol :-)