Looks like I will be learning something from this.
I found a page about speedtouch, and they make a DSL modem, with built in router and VPN tunnel capabilities.
I think that it could be a big solution for Quintum units on ADSL services, since I could build a tunnel end to end and have the Quintums in a static route on internal I.P.
ABout packeting forwarding or port forwarding on a router: On a real router, the delay should be so minimun that I doubt that will experience any quality issues.
I have it done with other units, like the Aplio-pro phones and works like a champ.
Where do you plan to get the speedtouch pro from????