Windows 7 all updated, HR 24 dvr which I have rebooted, ISP is wireless broadband which my provider gets from ATT T1. The program works with the same router and broadband on another computer running Vista.
You are saying that you have a WISP then. Have you talked to them, to make sure that they are not using QOS, to limit what users are doing. Especially since it is very easy to slaughter a T1 connection, to the point that it is worse then Dial-up speeds.
And when I mean Slaughter. I mean that I have been in an office that did Microfilm & Microfiche imaging. We would have to scan in the documents, and then go through and check them before placing into a database, or email. We also would have the other part of the office going through documents that were scanned in by a scanner in the office, then go through and put in case#, id#'s. The way they had it set up. Was that as you scanned info in, it would go through the VPN to a LAN based Cloud Server on a SAN, then the software that we were using on our workstations would have to download the information, for us to look at.
Very poor setup, but what do you expect for State Government IT.
Check with your WISP, to make sure that they are not putting any blocks in place, and that they are not possibly throttling users, which most likely they are, since it is a T1, and they do not want one user in particular using all of the bandwidth.
They can also work with you in setting up the equipment in your home, so that the proper ports are forwarded on it. Since some do not let the end user make changes for security reasons. And also they may be using their own form of DD-WRT, or some other Open Source Router Project on the equipment they are placing in the end-user's place.
Let us know what you find out from your WISP. Also if they can see if your computer is even seeing the DVR when you are not on your network. Some WISP's do use a Packet Sniffer to watch traffic, mainly for security reasons, but have it set up to not pull confidential information. Others do the reverse opposite. That is why there is a big push for people to use VPN, when doing banking or other secured site browsing.
Probably more then you want to know. But figured I would lay it out on the table for those items you need to be asking your WISP (Wireless ISP).