Time discipline is restored this week by the presence of another grown-up guest and the absence of beer. We’re delighted to welcome Ronan Kelly, CTO of Adtran, and get straight into his day job that focuses on fixed-line networking kit. This inevitably leads to an exploration of the arcane world of optical technology and concludes with a look at the current state of play of the global fibre market. Stay up to date with the most important telecoms stories from around the world with the Telecoms.com daily newsletter. Delivered FREE and direct to your inbox every day: http://ow.ly/XPA150KWZmO