MornayD Posted July 22, 2013 Report Share Posted July 22, 2013 Hi Have one way audio over sip trunk. when making calls internally or over BRI / FXO no issues at all. calls over SIP all end up with one way audio. have tested with sonicwall and netgear firewalls / routers, same result. have replaced snom one mini with 3cx, changed rtp ranges and audio works great in both directions. replaced 3cx with mini and back to one way audio (obviously i have updated the rtp ranges again). also, itsp says we ar sending this data in the sip invite. cannot see where to remove this on the mini. the itsp thinks this may have something to do with this. “a=rtcp-xr:rcvr-rtt=all voip-metrics” Thank you for your assistance 4.5.0.1097 Epsilon Geminids (snom ONE mini) Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted July 22, 2013 Report Share Posted July 22, 2013 Check out the latest blog entry... http://blog.snomone.com/2013/07/rtcp-xr.html It is a shame that so many carriers/SBC have problems with this. Anyway, we have added an option that turns RTCP-XR off in 5.1 (available also in 5.0.10o). Quote Link to comment Share on other sites More sharing options...
MornayD Posted July 22, 2013 Author Report Share Posted July 22, 2013 thank you for your reply. unfortunately i cannot find any reference to disabling this attribute on the link you have posted, only that it can be turned back on again. could you please just point me in the right direction? Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted July 22, 2013 Report Share Posted July 22, 2013 This feature was introduced somewhere around 5.0.10h. What version are you using? Quote Link to comment Share on other sites More sharing options...
MornayD Posted July 22, 2013 Author Report Share Posted July 22, 2013 4.5.0.1097 Epsilon Geminids (snom ONE mini) Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted July 22, 2013 Report Share Posted July 22, 2013 Ahh... There are settings in the pbx.xml file that you can tweak. Search for "rtcp_" and change the settings all to false, then restart the service. This completely disables RTCP-XR on the system, including the phones. But at least you can make calls to that service provider. Quote Link to comment Share on other sites More sharing options...
MornayD Posted July 22, 2013 Author Report Share Posted July 22, 2013 thank you, but how do i access these on the mini as it is an appliance. as far as i know, i have only the web interface to manage the device? Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted July 22, 2013 Report Share Posted July 22, 2013 No you can also log in by SSH. Username "root", password is the one that you have set for the web interface admin. Quote Link to comment Share on other sites More sharing options...
MornayD Posted July 22, 2013 Author Report Share Posted July 22, 2013 thank you. i have found the rtcp_ tags and set their values to false. unfortunately the one way audio remains. i have swapped with mini for a 3cx server, changes the rtp port ranges and tested ok with audio working in both directions. it therefore seems to be a problem with the mini / sip trunk configuration. i did notice many out of sequence rtp packets on wireshark. is there something else i can check to address this problem? Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted July 22, 2013 Report Share Posted July 22, 2013 Out of sequence problems are not the problem. Maybe just private message us the trunk login data and we are taking a look from here. Quote Link to comment Share on other sites More sharing options...
MornayD Posted July 22, 2013 Author Report Share Posted July 22, 2013 thanks, trunk data sent Quote Link to comment Share on other sites More sharing options...
Dale Posted July 22, 2013 Report Share Posted July 22, 2013 I've personally found that one way audio on the trunks can be caused by a router that does not properly handle the layer 7 SIP translations if you are behind a firewall. If you can disable the routers attempt to translate the SIP headers you can configure the Snom One Mini to create and process the headers correctly on the Admin Settings Ports page using the "IP Routing List" configuration line. Quote Link to comment Share on other sites More sharing options...
MornayD Posted July 23, 2013 Author Report Share Posted July 23, 2013 thanks Dale for your post. if it were a natting / routing problem, would we not expect to receive no rtp packets in pcap? in our case we do receive packets, they just appear to contain no audio. if i am misunderstand, please feel free to correct me. Quote Link to comment Share on other sites More sharing options...
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