kiloohms

Hello everyone Is anyone able to supply me Genetec/Gallagher Integration document please. Thanks

Thanks for the response. I'm concerned of video loss as a result of link fault where camera cannot send anything (unplugging the cable).

Thanks. I believe what you mean is if the VMS software uses its own method to detect loss of frames, it could do this faster but at a cost (both cpu cycles and money). And most rely on underlying OS to pass the link loss to VMS for it to consider a Video Loss event. By the way isn't it possible to tweak TCP parameters in the OS to make it detect link loss faster?

I'm working on a VMS where it takes approx 30 secs (or more) for the VMS to detect a camera going offline and generate Video Loss Alarm. However, I believe this timing is more a Windows OS issue than the VMS. My theory is that Windows OS does not mark the TCP channel as closed/lost until after several keep-alives go un-responded and a certain time is elapsed afterwards. To support the theory, if I disable VMS computer's Network Card, Video Loss alarm happens pretty much within 10 sec; because the OS get to know its network capabilities are down before having to wait for keep-alive responses, etc. Is there a different explanation to above issue? Is it possible to tweak any setting to make VMS generate Video Loss Alarm quicker than 30 secs?