Hi all, [I am not sure if this is the right place to post this request, if it is not I apologize in advance] As part of my graduate thesis, I am trying to design a SIP extension specification. Well, actually is much more less than that, I am just trying to figure out the correct way to modify the headers (extend them) to transport some specific information. I have no much experience with this sort of task but I am a bit lost with the whole thing. I was wondering if there's anyone in the list that is willing to tutor me for a couple of hours to help me get started. I would, of course pay for the services. Thank you. Best regards, Wilmar Perez