teo406 0 Posted April 7, 2018 Hello, I purchased dahua vto 2000a and vth 1550ch. I wanted to use vto with idmss or gdmss only, but I have notice that if vth is not online, when you press the button on vto, it doesn't sent push notification. Is that normal? So, only if I use sip firmware I can overcome this problem? Thanks in advanced for your help Share this post Link to post Share on other sites