tdenson 0 Posted August 17, 2013 I have an AVTech AVH312 NVR and I have bought some Huacam cameras from Amazon. I can not get them to play together. I naively thought that Onvif was Onvif was Onvif, but apparently it's not so. Can anyone here by any chance tell me if they have such a combination working. Assuming it's just incompatibility, which do I send back and start over with - the NVR or the cameras ? Share this post Link to post Share on other sites