I'm certainly not trying to understate the significance of the CRTC's role, but perhaps it's best to take a step back.
I would indicate that the 911 network was fully functional and has a 99.49% reliability rate. It is operated by three carriers: Bell, Telus and SaskTel. The issue here is that Rogers lost complete connectivity, so it was unable to pass on 911 calls.
I would also distinguish it from the earlier outage, which was about the radio access network. I don't want to start throwing around technical terms, but it related only to the wireless segment. The radio access network was down, which meant that 911 calls did go through. They would go to any other carrier with an active antenna in reach of the 911 call, as designed.