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</o:shapelayout></xml><![endif]--></head><body lang=RU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi All,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I’m new to freeswitch and I’m investigating if i can use FS as SBC.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I see that one can use FS as SBC for incoming and outgoing calls.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>But I was not able to find out if FS can be used for registration… I mean the subscriber from internet should send Register to FS, and FS should send Register to internal sip server. Is this possible?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Another question is: what will happen with “contact parameters” in Invite and Register messages? Will FS pass unknown parameters through? <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I’m interested in particular in the following Contact field:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Contact: <<a href="sip:+79980000004@10.169.10.64:5070;transport=udp">sip:+79980000004@10.169.10.64:5070;transport=udp</a>>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel,urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel.gsma.videocall";audio;video;q=0.8;+g.oma.sip-im;+g.oma.sip-im.large-message;expires=3600<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>If FS will get Invite or Register from Internet with such Contact, is it possible to preserve parameters (namely +g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel,urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel.gsma.videocall";audio;video;q=0.8;+g.oma.sip-im;+g.oma.sip-im.large-message;expires=3600) on the internal call leg?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:RU'>Thanks in advance,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:RU'>Nikolay.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>