No, we have not paid them thousands of dollars for them to say that we are "SIP CONNECT Compliant." That being said, I read through some of the 1.1 specs. I didn't see anything that was egregious, but I also did not look at all 45 pages. This much I can tell you: to be "SIP CONNECT Compliant" you would need to program your dialplan for some specifics. Here's an example:
Section 13 of the spec says:
13 Emergency Services
The SIP-PBX MUST have a dial plan that recognizes emergency calls.
This will differ from one country to the next and is a function of the administrator's dialplan configuration. There are no inherent limitations in FreeSWITCH to prevent you from being up to spec on this. However, out of the box with a default installation you won't have this already configured.
My guess is that we could write tests that demonstrate that FreeSWITCH *could* be SIP CONNECT compliant, however I doubt that would be of much value because you have to cough up a minimum of $2500 to have their seal of approval. Beyond that look at their membership list:
It's a who's who of retarded SIP providers and PBXes. They've got Sonus on their list for cying out loud! That alone should invalidate the entire SIP CONNECT venture IMHO.
So, I would answer your supplier this way: As far as I know there aren't any limitations in FreeSWITCH that would prevent it from complying with the SIP CONNECT recommendations.
Oh, and GLWT! :)