Way back in June 2014 I spoke at the SIP Network Operators Conference (SIPNOC) on the topic of "Is It Time For TLS for SIP?" I lost track of the audio recording but recently found it and thought I would share it. The slides for the presentation can be found here: http://www.slideshare.net/danyork/sipnoc-2014-is-it-time-for-tls-for-sip