Retoura from Digi International

This is currently my favorite ISDN router. It is extreemly easy to set up (menu driven). It also has features not found in the other ones I have been testing. One of these is the ability to not assign an address to the BRI port, thus saving on subnets.

In general it looks like a router that just happens to use ISDN for its transport, while the others look like ISDN bridges to which routing was added. I would highly recomend anyone interrested in ISDN to look at this box.