[SIPForum-discussion] 183 Session Progress

SIP Babie sipbabie at gmail.com
Wed Jan 20 07:56:29 UTC 2010

Hi All,

Please let me know when the provisional response  "183 Session Progress" is
been sent as a reply of INVITE.
Does Outbound Proxy looks for some header in INVITE on the basis of which it
sends "183 Session Progress" provisional response, like 100rel support in

SIP Babie
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