[SIPForum-discussion] Difference between sip180 and sip183.

Rafael Diego Farias de Oliveira rafaeldiego21 at gmail.com
Sun Aug 16 22:02:08 UTC 2015

What is the sip180 and sip183 and what problems may occur due to these
I know sip180 is ringing and the 183 is the session progress and he carries
the sdp.
I am with this question because I do not know that troubleshooting should
do in order to identify problems regarding these parameters.

I appreciate the opportunity to be posting on this site.
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