The majority (greater than two-thirds) of 9-1-1 calls in 2014 were made on cell phones.
What we did...
We compared the location of where 9-1-1 calls that went through successfully with an estimate of mobile VoIP coverage based on our Fall 2014 mobile field test results.
Below, in blue, is the estimated AT&T mobile VoIP coverage, where locations showing an estimated Mean Opinion Score (MOS) of 4 or greater are shown. Please refer to my May 26 blog post about how we calculate MOS and what it means.
Below, in red, is the estimated Verizon Wireless mobile VoIP coverage, where locations showing an estimated Mean Opinion Score (MOS) of 4 or greater are shown.
We wanted to get a better understanding of what parts of the state could support real-time streaming services for emergency responders who went to the location of the 9-1-1 call.
What's in the 9-1-1 data?
These images show not only mobile (cell phone) based 9-1-1 calls, but also home telephone 9-1-1 calls. For estimated mobile VoIP coverage, we looked at AT&T and Verizon. We did not consider other providers, because their coverage was significantly smaller.
Why should I care?
As FirstNet prepares to put out for bid a nation-wide interoperable mobile network for emergency first responders, it's important to understand where existing providers have coverage that supports streaming services such as VoIP, and where they don't. These two images provide a starting point for the discussion.