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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Hi,<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>I have two FS's (FS1, FS2) with ZRTP enable in two sites.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>I can make end-to-end ZRTP calls between two CSipSimple/ZRTP clients over the two FS's bridge where both FS's are set to 'proxy_media=true'.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>CSipSimple -> FS1 ---Internet -</span><span style='font-size:12.0pt;font-family:Wingdings'>à</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'> FS2 -> CSipSimple.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Now I connected a PBX to each FS with SIP-Trunk.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>PBX -> FS1 ------- FS2 -> PBX.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>When calling locally from CSipSimple to a PBX extension on the same FS then the ZRTP is terminated by the FS as MITM which is OK (FS dialplan 'proxy_media=false').<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>What I cannot figure out is how to terminate ZRTP call between CSipSimple/FS1 and FS2/PBX.ext and vice versa. <o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>CSipSimple -> FS1 ------- FS2 -> PBX.ext.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>I've tried to setup:<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'> FS1 with 'proxy_media=true' (passthrough ZRTP) + FS2 with 'proxy_media=false' (terminate ZRTP).<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>OR<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>FS1 and FS2 with 'proxy_media=false' .<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>All results with '</span> <span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>ZRTP not negotiated on both sides; disabling ZRTP passthru mode'.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Any help will be appreciated.<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Regards<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Assaf<o:p></o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:left;direction:ltr;unicode-bidi:embed'><span lang=HE dir=RTL style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p></div></body></html>