As a followup, I tried using two of the sample programs that are under the sipXtapi code tree. One, PlaceCall, exhibits the same problem I'm having in my test application.
The other, sipXezPhone, works. I've gone through my application and now have it performing the same exact steps as sipXezPhone as far as initializing SIP and making a call, but my application still disconnects with CALLSTATE_CAUSE_SMIME_FAILURE. I ran WireShark, and there is no traffic between my computer and the server after registration, so it's failing somewhere on the client side before it tries to make the call. I just can't figure out where. I don't know anything about S/MIME, but I read up on it some and understand it has to do with encryption. As far as I can tell, I've disabled all security measures by not passing a SIPX_SECURITY_ATTRIBUTES struct to sipxCallConnect, but maybe I'm missing something. I'm sure it's some configuration thing on the client side, but what's puzzling is that sipXezPhone works. Any help would be appreciated. Thanks, Joe
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