<html><head><base href="x-msg://23/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Ross,<div><br></div><div>Are you using the primary (eth0) or secondary (eth1) IP of the relay box? If you're using the secondary, especially if both interfaces' IPs are public, try adding these lines to sysctl.conf.</div><div><br></div><div><div>net.ipv4.conf.default.rp_filter=0</div><div>net.ipv4.conf.all.rp_filter=0</div><div><br></div><div><br></div><div><br></div><div>- Jeff</div><div><br></div><div><br></div></div><div><div><div>On Mar 14, 2010, at 11:56 AM, Ross Beer wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div class="hmmessage" style="font-size: 10pt; font-family: Verdana; ">Hi,<br> <br>I currently have a problem with one way audio or no audio at all on some calls between a Snom and an XLite client. Both are on different networks.<br> <br>I am using nathelper to resolve natting issues with SIP packets and MediaProxy for all calls using:<br> <br>engage_media_proxy();<br> <br>It looks like the media proxy is engaged, but not passing the audio on, I've set the following in /etc/sysctl.conf:<br> <br>net.ipv4.conf.default.rp_filter=0<br>net.ipv4.conf.all.rp_filter=0<br>#net.ipv4.tcp_syncookies=1<br>net.ipv4.ip_forward=1<br>net.ipv4.conf.default.forwarding=1<br>net.ipv4.conf.all.forwarding=1<br># Uncomment the next line to enable packet forwarding for IPv6<br>net.ipv6.conf.all.forwarding=1<br># Do not accept IP source route packets (we are not a router)<br>#net.ipv4.conf.all.accept_source_route = 1<br>#net.ipv6.conf.all.accept_source_route = 1<br>#<br># Log Martian Packets<br>#net.ipv4.conf.all.log_martians = 1<br> <br>The test server is using Ubuntu 9, is there anything above that looks incorrect? Firewall logs do not show any traffic being blocked either.<br> <br>Any advice would be appreciated.<br> <br>Thanks,<br> <br>Ross<br><br> <br> <br><br><hr>Got a cool Hotmail story?<span class="Apple-converted-space"> </span><a href="http://clk.atdmt.com/UKM/go/195013117/direct/01/" target="_new">Tell us now</a><span class="Apple-converted-space"> </span>_______________________________________________<br>Users mailing list<br><a href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><br><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><br></div></blockquote></div><br></div></body></html>