This is a continuation of my previous thread on unregistered direct IP dialing. I thought that I had direct IP dialing working correctly, but I spoke prematurely.
I started receiving calls at random hours apparently originating from SIP Scanners. The originating phone numbers have been 100, 1000, and 555-0000. The same originating numbers were mentioned in the SIP Scanner Thread.
The OBi202 is replacing a Sipura SPA-2000. I never had the SIP Scanner problem with the Sipura ATA. I was also puzzled as to how the SIP Scanner was obtaining my 6 digit
AuthUserName.
I did some testing and found that the OBI-202 was ignoring the AuthUserName parameter and was accepting calls to
anynumber@mydomain.org:port. The Sipura box rejects everything except the authorized user number and returns a 404 error code on incorrect numbers. The OBi connects to any number (or no number) in front of the @ symbol without producing an error code. I tried removing the @ symbol as well - this produced a 400 error code.
This looks like it may be a firmware problem.