disstressed

hello chaps, newbee here after some tech info if you can help me!!!! i have installed a gv800 card works fine ,but the the customer wanted a ptz dome camera with some peremeter protection. i contacted my wholesaler who advised me to get a gv net card and a gv i/o boxed unit. i asked about compatability issues, no problem he said, the units will not conflict even though they are on the same rs422/285 coms port. so i can get the ptz to work, or the alarm inputs but not both. back to the wholesaler who then sold me a combo gvnet i/o card. guess what same problem the alarm input works but no data to the dome. he now advises all of the above connected through a gv hub ( its a usb device with 8 coimms ports on the unit). my question is this is there a software glitch that is stopping the data from passing through the gvnet i/o card, or is there a software patch available and is this guy taking the p**** ? any suggestions ????

thanx for prompt reply. the dome is a multi protocol unit supplied by a comp. called ljd.its ok i have had it working on the system. it looks like i have to buy the hub as well.only with i knew this prior to quoting for the job- its cost an extra £450 due to my wholesaler not being genned up on the kit.!!! any ideas why the gvnet i/o doesn't like the rs 422/485 port????