<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="">SIP Simple Client SDK (which uses PJSIP underneath)<div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 6 Apr 2022, at 12:02, 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=""><div class="">> The underlying library</div><div class=""><br class=""></div><div class="">Which one is that? PJSIP? I found some indications (<a href="https://trac.pjsip.org/repos/ticket/1785" class="">https://trac.pjsip.org/repos/ticket/1785</a>) that it might be supporting it, although I'm not sure if the support is at the right API level that SylkServer/SipSimple SDK require. </div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 6 Apr 2022 at 16:52, Adrian Georgescu <<a href="mailto:ag@ag-projects.com" class="">ag@ag-projects.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;" 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 class=""><br class=""><blockquote type="cite" class=""><div class="">On 6 Apr 2022, at 11:49, Ivan Ribakov <<a href="mailto:i.ribakov@zaleos.net" target="_blank" class="">i.ribakov@zaleos.net</a>> wrote:</div><br class=""><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" target="_blank" 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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