{"id":1294,"date":"2008-11-25T09:00:36","date_gmt":"2008-11-25T09:00:36","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/2008\/11\/recording-voip-calls-using-wireshark.htm"},"modified":"2008-11-25T09:00:50","modified_gmt":"2008-11-25T09:00:50","slug":"recording-voip-calls-using-wireshark","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2008\/11\/recording-voip-calls-using-wireshark.htm","title":{"rendered":"Recording VoIP calls using Wireshark"},"content":{"rendered":"

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<\/a>. 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.<\/p>\n

First of all, I should point out that, depending on where you live, it might be illegal to record phone calls without consent. In my case, I recorded a call from my desk phone to the voicemail on my mobile phone. 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. This was a proof of concept – the real usage case I have in mind is for the Coalface Tech podcasts<\/a>, 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). Using the Cisco 7940 on my desk in the UK in to call a landline in Oz via my Sipgate account<\/a> shouldn’t be too bad (and won’t cost too much either). What follows is a recipe for recording the call.<\/p>\n

Ingredients<\/h3>\n