I have a recently installed iDCS 100 R2 that we're having trouble getting to work through the customers Sonicwall soho 3 firewall. If you bring the phone into their office and plug it in, works fine. We have external IP's set for both the MCP and MGI cards and private w/public turned on. The Network guy says that he has 1:1 nat running but all we can get is the phone to connect and dial but no talk path either way. Samsung says that we need to make sure that 1024-4999 TCP ports are open on the system side but my customer is telling me that he is using some of those ports for something else, plus the samsung manual says that those ports are for H.323 gateway. Any ideas?