error "Connect Failed !(2) Reason :( -3) no stream Timeout".

[pratape]

I require some help in viewing my DVR remotely.

I get the error "Connect Failed !(2) Reason -3) no stream Timeout" when I try to view it from my work network.

Basically I have setup a cctv system with 6 cameras and registered with dyndns for the router's dynamic address and configured the router to port forward to the dvr.

I can access the dvr when connected to the LAN (internal network) and can also view the cameras remotely when I use my Nokia N97 phone as a modem. I can't figure out if I need to open any other ports to view the video stream from my work network.

I have also tried disabling the windows/ AV firewall but still get the same error. At home I am using a Netgear 3G Broadband Wireless Router with a usb modem connected it.

Any help would be greatly appreciated as I have run out of ideas.