![]() ![]() In Wireshark, select VoIP calls from the Statistics menu – details of all captured calls should be listed:.Once the call(s) to be captured have been made, end the capture.Using Wireshark, start capturing traffic on the appropriate interface.that they are both connected to the hub – not a switch, unless port spanning or a tap are in use). Ensure that the computer being used for packet capture can see the phone traffic (i.e. ![]() ![]() * If a softphone were used on the same computer as the packet capture, then it should be possible to capture the network traffic without needing to use a hub. VoIP connectivity (via IP-PBX or Internet telephone service provider).Wireshark (see last week’s post on using Wireshark for basic packet capture and analysis).What follows is a recipe for recording the call. Using the Cisco 7940 on my desk in the UK in to call a landline in Oz via my Sipgate account shouldn’t be too bad (and won’t cost too much either). This was a proof of concept – the real usage case I have in mind is for the Coalface Tech podcasts, as last time James and I tried to record one over Skype there was just too much lag (and interference… although that might have been a local problem). As I was both the caller and the receiver I think it’s safe to say that there was consent – even if it does sound a bit mad. In my case, I recorded a call from my desk phone to the voicemail on my mobile phone. Well, funnily enough, I want to do the same thing… and it turns out to be remarkably easy – at least it is if you’re using a VoIP phone.įirst of all, I should point out that, depending on where you live, it might be illegal to record phone calls without consent. Gary Marshall writes about how the UK Government plans to pour billions of pounds (as if they weren’t wasting enough money already) into recording all of our telephone calls. Please be warned that the information here may be out of date. I don't routinely update old blog posts as they are only intended to represent a view at a particular point in time. ![]()
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