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