Look at server firmware from sorenson!
ftp://ftp.sorenson.com/vrs/config.txt
I think this is no longer! that the reason is different version from today!!!
The Sorenson's gateway can detect to other vp-100 and v-200 w/visibleUPGRADE!
But for DVC-1k still running
ftp://ftp.i-2-eye.com/