Still no further forward, the secure CNM DVR indicates that "meye" is the iphone app to use for remote access, I have tried that app and others by the same company to no avail. I can connect to the DVR using the iphone app (Login Successful) however no video is present.
To try and get to the route of the problem I monitored the ethernet packets between my router and the DVR (using the excellent Wireshark application), on initial login and subsequent changing of the cameras I could see the TCP transmissions to the DVR port (34599). One indication that the video is not being streamed that there are no other packets transmitted/received between the camera changes. I tried monitoring the packets between the router and my broadband connection, however due to NAT, I cannot work out the traffic streams to and from the DVR.
I have forwarded the ports specified to the DVR and tried accessing the system using a dyndns linked address however I get exactly the same result, login sucessful and no video.
I am open to suggestions as to the next step to take, I am determined to work out the problem and hopefully resolve it!!!
Stuart