See this post:
http://www.mail-archive.com/freeswitch-dev@lists.freeswitch.org/msg00926.html
Thanks so much Anthony but I have one more question:
I was checking the source file sofia_reg.c and it seems that the code had been written iin such a way that FreeSWITCH can authenticate SIP agents based on RFC2069 and RFC2617. Is that conclusion correct?
Thanks in advance,