I remember something similar, it was a presentation given at CCC in Germany. Tried searching for it on their YouTube channel, just to discover said channel was terminated for breaking YouTube ToS?!
That's really sad, their channel had videos of all the past talks from the CCC, an amazing resource that's now gone.
You probably were thinking of the CCCen YouTube channel? That never was an official channel, but a copy-cat that just uploaded all the CCC stuff, and was banned for it.
Yeah, I now realized this too. Still weird as CCCen had the videos organized in a more useful way, thus popping up way above in search results.
At least good to know the stuff is still there.
That's really sad, their channel had videos of all the past talks from the CCC, an amazing resource that's now gone.
I think this is the one you might have been talking about: https://www.youtube.com/watch?v=lsIriAdbttc
If it's not that one then it's probably one of the "Running your own 3G/3,5G/GSM network" talks.