I went to the very first class for this product. Nice, but setting up SIP trunks to different systems (CS1k, BCM50) is a bit tough. But all in all, it's very nice.
Go to GOOGLE and search sipXecs.. This is the same platform that the SCS500 uses. It's free and it works nicely. Just doesn't have the Conferencing ability that the SCS500 has...
Maybe we need to get another FORUM setup for SIP based systems. I will gladly lend what I have learned so far..
DB..