jlumby Posted September 1, 2010 Report Share Posted September 1, 2010 I have a couple of customers that are long time PBXnSIP users. They were running fine in version 3. I upgraded them to version 4 to gain DoS protection. At that time, they started noticing that occasionally they would get calls with no audio. For the most part they wrote it off as someone hanging up on them. However they just discovered that it is happening every now and then with extension to extension calls. The extension to extension calls are not going through any kind of NAT, and their network topology has not changed since they were running V3 perfectly. One is running Cisco phones, and the other is running Aastra. The only thing that has changed is the PBX is now at version 4. To have this happening to 2 completely unrelated customers makes me suspect something in V4. Are there any changes in settings that V4 has that I should be aware of that might do this, or is anyone else experiencing this? It does not happen very often, only 1-2 calls out of every 500, so it is very difficult to replicate in order to capture while it is happening. On a possibly unrelated note, I noticed that Version 4 generates a whole lot of emails that have the subject line of: User disconnects call. The body contains the line stating that "One side of the call between X and Y did not receive media for Z seconds and the other side of the call disconnected the call." The funny thing is I am sure that most of these are incorrect. The reason I know this is because I can generate it every time I page to a paging group where the only member is a cyberdata paging gateway (which paging by definition should have 1 way audio), or by faxing. The faxes always go through, however I believe the PBX stops getting traditional media, switches to T.38, and therefore thinks it is not getting media, when really all that happened is that it is getting T.38 instead of traditional audio. Please let me know your experiences/ideas Quote Link to comment Share on other sites More sharing options...
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