Hi there, I am a student working with pysua python API, I am trying to make the Raspberry a Walkie Talkie. I found the API very useful, but I have a question: how can I label a call, so that the callee can see the message that the caller attached to the call? I checked the CallInfo class, I saw uri, role, state_text and so on, but these are all parameters generated automatically when a call is made, what I'm think now is can I create a customized message and attach it to the call? If yes, how can the callee retrieve the message from the call and which callback function should I use? Thank you very much! Lu Lin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20140812/c48d3ef6/attachment.html>