Hi, What are the api calls that need to be made to generate a SIP REGISTER message to a Server and respond to the servers 401 challange? I'm trying to write a SIP client for an Asterisk server and I'm wondering how to do that. Regards, Abhishek -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130306/c4f28f96/attachment-0001.html>