WebRTC Does NOT Include A SIP Stack

A couple of days ago I published a post that gave an overview of what I have recently found out about WebRTC. In the post I mentioned that WebRTC includes a SIP stack. Thanks to a reader, I have found out in the meantime that this is actually not the case. As this is quite a significant difference I have updated the post accordingly. Thanks for the correction, I've learned a lot and sorry for not getting it right the first time.