any chance somebody can clarify to me why do we really need USB eTokens? Let's say I want to configure encrypted signaling (and maybe media) between my IP phones inside local network. I know from Microsoft world that you can create all this without buying some "secret" gadgets. I'm the network admin and therefore the supreme authority for that same network. Shouldn't be normal that I can use my CUCM and generate self-signed certificate and then create CTL file and LSC etc without using USB eTokens? Every document I was able to find on CCO is telling me that those USB sticks are required. Is this really the case?