You won't be able to listen to the audio if it is encrypted as that would defeat the purpose. Are you using SRTP?
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Listening to RTP voice conversations using Mitel 3300 ICP CX and Wireshark
Hi All,
We have a problem at a customer site and will be going there to capture RTP packets using Wireshark (and Port Mirroring on a HP Procurve 2650) on their Mitel 3300 CX.
How do I go about by analying the packets and listening to the RTP conversation?
In a test environment i've managed to get "UDP packets" and then using "Decode as..." to convert the output to RTP (which indicates G.711 PCMA codec etc.).
Now after that, if I goto "Statistics -> VOIP Calls" it shows nothing (is this only used for SIP?)
If I goto "Statistics -> RTP -> Show all Streams" it shows the conversations (both ways from phone to ICP and ICP to other phone) but if I select save payload, save as .au and "both directions", the length of the audio is correct but the audio itself is blank.
Is this due to encryption on the Mitel box? I get none of that "Bogus IP header" stuff.
Any and all help is appreciated
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Answers
Very strange. I'm not sure what protocol we're using, can you point me in the direction of where to find out? As for cpaturing the whole call, it should be, i'm mirroring the port on a 3com 4500G, and it's capturing several different RTP streams (classed as UDP until I 'decode as') thats start and finish
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by: IntegraICT-DaveCarterPosted on 2008-02-07 at 05:23:29ID: 20840461
Further to this, I have TLSv1 protocol packets going to and from the Mitel 3300 (Which I believe is wrapped in SSL). So do I need to disable Voice encryption on the Mitel 3300?