I keep getting "UNAVAILABLE" for the CID message.
There's a limit to how many calls you can make per hour with the demo.
I used the proxy server a few times, and after awhile it detected that I was using a proxy and denied me any more calls, flagging a "Proxy Server Abuse" message.
Also, you apparently can't call the same number too many times or it returns a "Phone Number Abuse" flag.