I'm preparing to increase the size of our VoIP network and am aware of the principle differences between the ISRs. Our remote sites will have subscribers, so SRST is not really an issue, and the ISRs are only being used to terminate PRIs and will not be used to route data traffic. This being the case, are there caveats to using 2811 routers with 8 VWIC ports? I don't really know what to expect by way of offnet traffic, but have had success with the 2811 line and am wondering if I can repurpose for the new network and not have too much to worry about.
Also, I am planning on configuring some hardware conferencing but I have no idea yet how popular it will be.