Hi I have AVTECH dvr 787 & have got a static ip too .But still i cannot view dvr thru internet. I dont have pc here , so i have put the
static ip in the dvr with the gateway & mask . Even in the router i have selected WAN & then static ip then put
the same static ip , gateway mask port on the router config. But still the same problem . Can anybody help

It may help to know what router/modem you are using.