I talked to our distributor actually. He told me he had talked to Samsung about smdr loosing connection when the system was on a public, static ip. I know this was a problem. I have several systems that are on the public only side and have tried to monitor the smdr that way, and within 20 min or so it will lose the smdr connection. He told me that if I put the system on private and do the port forwarding route it should work better. And it does. Our distributor has his smdr monitor running on his system and says it will periodically go off but it's usually over the weekend, maybe once a month. I think he just monitors it using extra putty. I have a test 7100 running now with TAPIT and its been running for about 36 hours now. I will check when I get to the office this morning.