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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Greger, thanks for you answer,
it helped to place order in my confused ideas.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>About the bug you
mentionated, has it been fixed in the cvs stable branch ( </span></font><font
size=2 face=Verdana><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana'>rel_0_8_14
, currently I have upgraded to this release ) or I have to install the main unstable
branch ?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana'>I’ve sniffed a call from the
SER interface connected to the GW: it appears that the entire SIP negotiation on
this side ( I mean source IP address of UDP packet ) is between the GW ip ( x.x.x.243
) and the SER IP assigned to the other interface (10.0.0.1 ) but, if I’m
not wrong, I expected a SER UDP source address x.x.x.246 . Is this the problem
? May it depends from the mentionated bug ?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana'>After successfully SIP negotiation,
I see RTP packet from GW -> rtpProxy ( x.x.x.244 -> x.x.x.246 ) and from
client -> rtpproxy ( 10.0.0.2 -> 10.0.0.1 ), but rtpproxy is not bridging
packets between the two interfaces.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Another question: is
there any documentation about the use of force_rtp_proxy options more complete
then nathelper README ?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>That document only
mentionate </span></font><font size=2 face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>force_rtp_proxy("FI") and force_rtp_proxy("FE")
( hope this is correct in this case ), but in many example I see force_rtp_proxy("FII")
or force_rtp_proxy("FIE") and I don’t understand the double
option.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Many thanks again<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Fabio</span></font><font size=2
color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:
Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> <o:p></o:p></span></font></p>
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<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-GB
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>Da:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-GB style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> Greger V. Teigre
[mailto:greger@teigre.com] <br>
<b><span style='font-weight:bold'>Inviato:</span></b> mercoledì 12 luglio 2006
8.46<br>
<b><span style='font-weight:bold'>A:</span></b> Fabio Mac</span></font><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'>chi<br>
<b><span style='font-weight:bold'>Cc:</span></b> serusers@iptel</span></font><font
size=2 color=black face=Tahoma><span lang=EN-GB style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'>.</span></font><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:windowtext'>org<br>
<b><span style='font-weight:bold'>Oggetto:</span></b> Re: [Serusers] SER with 2
ethernet + PSTN gateway: RTPPROXY bridge mode conf</span></font><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'>That's a tricky one :-) A few comments:<br>
- I believe bridge mode is necessary and thus rtpproxy is what you need
(mediaproxy does not have this capability AFAIK)<br>
- rtpproxy just waits for the peers to connect, it does not connect rtp to
anything, so if you see traffic from the wrong pstn interface, I would look at
GW<br>
- Just inspect your INVITE and OK SDP to get the options straight: The one
going to your 10. network should have the 10.address in SDP, the one to your
GW, should have your .246 address<br>
- Please note that 0.9.x has a bug (fixed in cvs head). The problem is related
to signalling on different listen ports/interfaces: If SER is configured to
listen to more than one port, the signalling may not return with the correct
src_ip/port (UDP packet, not SIP message). I'm not sure if this holds for
listening on different interfaces as well, but I would think so<br>
<br>
g-)<br>
<br>
Fabio Macchi wrote: <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Hi,<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>I’m using SER with nathelper
and rtpproxy as a proxy to guard a PSTN gateway ( calls can only be generated
by SIP client and terminated to PSTN, no SIP to SIP or PSTN to SIP calls
allowed, REGISTER is not needed ).<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>PSTN gateway and SER eth0 have
pubblic internet IP address ( SER eth0 x.x.x.246, PSTN gateway with two
interfaces, x.x.x.243 for SIP and x.x.x.244 for RTP ), SER is setted to force
rtpproxy for every call and rtpproxy is started in standard mode: this is
running fine, every client from internet ( behind a NAT box or not ) is able to
place calls.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Now the problem is that I need to
collect SIP traffic from another non routable network to the PSTN gateway ( es.
10.0.0.0 ) <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>I have connected SER interface eth1
to this network ( ip 10.0.0.1 ) and I am trying to connect to the PSTN from a
client in the network 10.0.0.0: SIP signaling seems to be ok, but I’m unable
to setup RTP stream.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>With this configuration it appears
that RTPproxy try to connect to PSTN gateway on x.x.x.243 and not x.x.x.244.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>I have tryied to set RTP proxy in
bridge mode ( rtpproxy -l x.x.x.246/10.0.0.1 ) without succes, but
documentation is not very clear about this case (I think it has been designed
for client to client, not client to PSTNgateway ).<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>…..<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>if (dst_ip == x.x.x.246)
{ #!! Internet IP address<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>
force_rtp_proxy("FI");<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>
t_on_reply("1");<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>
} else if (dst_ip == 10.0.0.1) { #!! Private IP address<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>
force_rtp_proxy("FE");<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>
t_on_reply("1");<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>
};<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>…..<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Now the question is: what is the
correct design to implement this ?<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>RTPproxy in standard mode ?<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>RTPproxy in bridge mode ? ( how ??? )<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Mediaproxy ?<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Any help would be appreciated, many
thanks in advance.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Fabio</span></font><o:p></o:p></p>
<u1:p></u1:p><pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre
style='text-align:center'><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>
<hr size=4 width="90%" align=center>
</span></font></pre><pre><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_______________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Serusers mailing list<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="mailto:Serusers@lists.iptel.org">Serusers@lists.iptel.org</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="http://lists.iptel.org/mailman/listinfo/serusers">http://lists.iptel.org/mailman/listinfo/serusers</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <o:p></o:p></span></font></pre></div>
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