Or maybe this guy was going to die no matter what. This sort of thing happens. While our modern infrastructure is important and we should angst about major fuckups (especially if they involve TWC and friends), even the old unbreakable Bakelite phone / POTS system screwed up from time to time.
The other thing to realize about the current 911 system (at least in the US) is that it is a fairly robust, fairly smart system. In the 'old days' when we had to make sure that paths were clear of T. Rex and raptors, it was often hard to find an address because the caller didn't know where they were. "Rock lane! No Boulder Boulevard! No, Flintstone Freeway!" No we can just look at the map.
But stuff like this is going to fail, Murphy sees to that (genuflects). If somebody actually dies because of a 911 delay, their prognosis is pretty grim anyway.