Hello,<div><br></div><div>I also tried <span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">rtpproxy_offer/</span><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">rtpproxy_answer but no luck.</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">my rtpproxy is running..</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">rtpproxy -l 192.168.2.3 -l <a href="http://127.0.0.1:7722">127.0.0.1:7722</a> -u user</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;">and kamailio on 192.168.2.3 asterisk on 192.168.2.23</span></font></div>
<div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;"><br></span></font></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;">all three in behind same nat </span></font><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">175.136.223.112.</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">and uac is behind another nat.</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">below is my wireshark INVITE and 200OK.</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;">route[RTPPROXY] {
#!ifdef WITH_NAT
        if (is_method(&quot;BYE&quot;)) {
                unforce_rtp_proxy();
        } else if (is_method(&quot;INVITE&quot;)){
                rtpproxy_offer(&quot;rco&quot;,&quot;175.136.223.112&quot;);
                xlog(&quot;offer&quot;);
        }
        if (!has_totag()) add_rr_param(&quot;;nat=yes&quot;);
#!endif</span></font><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">
</span></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;"><br></span></font></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;"><div>
onreply_route[REPLY_ONE] {</div><div>        xdbg(&quot;incoming reply\n&quot;);</div><div>#!ifdef WITH_NAT</div><div>        if ((isflagset(FLT_NATS) || isbflagset(FLB_NATB))</div><div>                        &amp;&amp; status=~&quot;(183)|(2[0-9][0-9])&quot;) {</div>
<div>                rtpproxy_answer(&quot;rco&quot;,&quot;175.136.223.112&quot;);</div><div>                xlog(&quot;answer&quot;);</div><div>        }</div><div>        if (isbflagset(&quot;6&quot;)) {</div><div>                fix_nated_contact();</div>
<div>        }</div><div>#!endif</div><div><br></div></span></font></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">----------------------------------------------</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;">e0
E!;pINVITE <a href="http://sip:102@192.168.2.132:5062">sip:102@192.168.2.132:5062</a> SIP/2.0
Record-Route: &lt;sip:192.168.1.3;nat=yes;ftag=as3d4c45ac;lr=on&gt;
Via: SIP/2.0/UDP 175.136.223.112:5060;branch=z9hG4bK7ed5.6ceec772.0
Via: SIP/2.0/UDP 192.168.1.23:5080;branch=z9hG4bK34b777a3;rport=5080
Max-Forwards: 69
From: &quot;101&quot; &lt;<a href="mailto:sip%3A102@aextddns.dyndns.info">sip:102@aextddns.dyndns.info</a>&gt;;tag=as3d4c45ac
To: &lt;<a href="http://sip:102@192.168.1.3:5060">sip:102@192.168.1.3:5060</a>&gt;
Contact: &lt;<a href="http://sip:102@192.168.1.23:5080">sip:102@192.168.1.23:5080</a>&gt;
Call-ID: <a href="mailto:0bf35cba6b3cb98156b70a3a4db2507a@aextddns.dyndns.info">0bf35cba6b3cb98156b70a3a4db2507a@aextddns.dyndns.info</a>
CSeq: 102 INVITE
User-Agent: Asterisk PBX 1.6.2.18
Date: Mon, 04 Jul 2011 07:28:08 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces, timer
Content-Type: application/sdp
Content-Length: 327

v=0
o=root 1789123892 1789123892 IN IP4 192.168.1.3
s=Asterisk PBX 1.6.2.18
c=IN IP4 192.168.1.3
t=0 0
m=audio 13260 RTP/AVP 0 3 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv
a=nortpproxy:yes</span></font><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">
</span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">-----------------------------</span></div>
<div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div><font class="Apple-style-span" face="monospace" size="3"><span class="Apple-style-span" style="white-space: pre;">e90
E|;YphSIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.200:5062;rport=2474;received=175.138.21.31;branch=z9hG4bK823351926
Record-Route: &lt;sip:192.168.1.3;nat=yes;ftag=1020708120;lr=on&gt;
From: &quot;101&quot; &lt;<a href="mailto:sip%3A101@aextddns.dyndns.info">sip:101@aextddns.dyndns.info</a>&gt;;tag=1020708120
To: &lt;<a href="mailto:sip%3A102@aextddns.dyndns.info">sip:102@aextddns.dyndns.info</a>&gt;;tag=as199c06be
Call-ID: <a href="mailto:987641369@192.168.2.200">987641369@192.168.2.200</a>
CSeq: 21 INVITE
Server: Asterisk PBX 1.6.2.18
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces, timer
Contact: &lt;<a href="http://sip:102@192.168.1.23:5080">sip:102@192.168.1.23:5080</a>&gt;
Content-Type: application/sdp
Content-Length: 304

v=0
o=root 1460646028 1460646028 IN IP4 192.168.1.3
s=Asterisk PBX 1.6.2.18
c=IN IP4 192.168.1.3
t=0 0
m=audio 18346 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv
a=nortpproxy:yes</span></font><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; ">
</span></div><div><span class="Apple-style-span" style="font-family: monospace; white-space: pre; font-size: medium; "><br></span></div><div>-- <br>Regards,<br><br>MingHon<br>
</div>