I've been trying to understand how all the pieces fit together. I'm more of a visual learner so I've been drawing this diagram. Anyone care to comment/correct/complete it? I'm interested in completely understanding the "flow" of how an incoming connection is routed out to a particular USB port, as well as what configuration parameters/files are involved. I've attached it but I think this list strips attachments so you can get it here. https://drive.google.com/open?id=0BynhvyBxwd-IWEJkQnVWRE5wWW8&authuser=0 On a side note.. One thing I've see in extensions.conf is exten => ${NODE},1,rpt,${NODE} This would seem like it would keep you from having to write lines for every extension on the local server but things stop working if I just have that line in my radio-secure staza. Is there a secret to this? Thanks! Regards, Mike Montalvo, KF7MBK