Telstra is apparently doing this in Australia but the full technical details I did not find. But it's basically an add-on within their existing network: http:/

Telstra is apparently doing this in Australia but the full technical details I did not find. But it's basically an add-on within their existing network: http://www.smh.com.au/business/media-and-marketing/telstra-launches-dedicated-emergency-services-mobile-network-20160922-grmc9o.html http://www.smh.com.au/business/media-and-marketing/telstra-l...