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<p>Hello,</p>
<p><br>
</p>
<p>By default, Freeswitch seems always translates incoming SRTP packets to outbound RTP only packets as the INVITE SIP message to Receiver from FS contains only RTP/AVP audio media in SDP section even if the Caller's INVITE has RTP/SAVP audio media only.
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<p>Caller to FS</p>
<p><span>Session Initiation Protocol (INVITE)</span><br>
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<p><span>. . . .</span></p>
<p><span>Session Description Protocol</span><br>
</p>
<p><span><span> Session Description Protocol Version (v): 0</span><br>
</span></p>
<p><span><span><span> Owner/Creator, Session Id (o): 1001 625 1382 IN IP4 10.113.49.31 </span><br>
</span></span></p>
<p><span><span><span><span> Session Attribute (a): rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics</span><br>
</span></span></span></p>
<p><span> Media Description, name and address (m): audio 7078 <b><span style="color: rgb(255, 0, 0);">RTP/SAVP</span></b> 96 97 98 99 0 8 101 100 102</span><br>
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<p><span><br>
</span></p>
<p><span>FS to Receiver</span></p>
<p><span></p>
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Session Description Protocol<br>
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Session Description Protocol Version (v): 0</p>
<span><span> Owner/Creator, Session Id (o): FreeSWITCH 1477472443 1477472444 IN IP4 172.17.10.23</span></span></span>
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<p><span> Media Description, name and address (m): audio 25206 <b><span style="color: rgb(255, 0, 0);">RTP/AVP</span></b> 0 8 101 13</span><br>
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<p><span><br>
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<p>Is there a way to let FS send SRTP packets to receiver as the receiver can accept SRTP media only?</p>
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<p>Tom</p>
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