is it possible to "hairpin" two PRI's on a 6608? The idea is to have a PRI to the LEC with a number of DIDs, including one as a lead number to a dial-in RAS server. Then take another 6608 port and connect it to the RAS server (a 3660 with some MICA modems and a PRI card) as a Network-side. Route incoming calls to the RAS lead number to one of the outgoing PRI channels to the RAS server. The alternative would be a separate PRI to the LEC for the RAS server, but that's expensive and I have spare 6608 ports.
Another consideration is what this would do to the modem speed. Would I still get a v.90 connection?
seems like it should work, but I'm not sure.