Exacq and Arecont are the number one worst integrations ever, I have 63 exacq installs with 47 Arecont cameras - (27) 8185's and (16) 8365 installed across various facilities. Exacq is unable to keep the connection to the cameras, the cameras seem to be running vie web HTTP interface when viewed.
As if this writing Nov 20-2011 there is nothing that can be done, if you made the purchase of the cameras and software, you are pretty much stuck.!
I would not recommend exacq and arecont if my life depended on it.
Peace All,
F6