I have a problem with remote IP phones that we just setup for users to work from home, this is a CS-5000 system that used IP phone internal with no problems and two of them need to work from home so we set up 1 to 1 Nat both to the PM and the PEC-1 with the correct ports to be opened on there firewall that is a sonicwall that there IT person programmed the Nat. The problem that I'm having is with the remote phone as a test from my office the phone connects and if a call another extension I can hear them but they can not hear me and on the phone Insufficient Bandwidth pops up, called tech support and we went over the IP connections information as well made sure the extension was set to Nat. Does this sound like a firewall problem on the sonicwall not setup right and has anybody had this happen to them with a sonicwall?