When I was the CTO & VP of Engineering for Wayport (public, mostly hotel Internet) we designed an Ethernet switch that could use Home PNA or Ethernet PHYs. (Lat

When I was the CTO & VP of Engineering for Wayport (public, mostly hotel Internet) we designed an Ethernet switch that could use Home PNA or Ethernet PHYs. (Later adapted to also offer VDSL to an in-room modem.) We also designed our own 802.11 access points. All of our competitors had at least one fire. In a hotel with hundreds of people asleep. It didn’t matter if they used commercial gear or not. Every one of them had a fire. We never had one, but I was obsessed with not hurting anyone because we had missed something. And yes, it kept me up at night.