[QUOTE="ginge"] The following should cover all the eventualities you run in to. "It's a cloud." ;-) "IP passes through it." "The IP traffic can be routed and prioritised in specific ways depending on how it's labeled." And, most importantly: "When it goes wrong, it's the comms vendor's fault."[/QUOTE] noted, ta. I won't have any direct involvement in the project, but it's good to know the correct jargon.