<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">The underlying library does support handling initial INVITE with no SDP but SylkServer itself does not. It could do it with extra development.<div class=""><br class=""></div><div class="">Regards,</div><div class="">Adrian</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 6 Apr 2022, at 11:49, Ivan Ribakov <<a href="mailto:i.ribakov@zaleos.net" class="">i.ribakov@zaleos.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Does SylkServer support 3PCC Flow I as described in <a href="https://datatracker.ietf.org/doc/html/rfc3725#section-4.1" class="">https://datatracker.ietf.org/doc/html/rfc3725#section-4.1</a> . I'm looking for a way to force SylkServer to generate SDP offer so that I can use it to dial-out to conference participants. I've tried sending INVITE with no body but got "Not Acceptable here" error response in return.<div class=""><br class=""></div><div class="">Regards,</div><div class="">Ivan</div></div>
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