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    "en": "Emergency telecommunications failure is an umbrella term for telecommunications of an ‘extraordinary nature’ under abnormal and potentially adverse network conditions (ITU, 2007). <br /> <p>ITU, 2007. <a href=\"https://www.itu.int/rec/T-REC-Y.2172-200706-I/en\">Y.2172: Service restoration priority levels in Next Generation Networks. International Telecommunication Union (ITU)</a>. Accessed 30 November 2019.</p>"
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      "Emergency telecommunications failure is closely linked to service restoration. Service restoration is described as a set of automated or manual methods, invoked after a network failure, to enhance the ability of successful communications reroute and completion around the failed network element(s) (ITU, 2007). All forms of communications traffic are expected to be carried by next generation networks – control plane traffic (e.g., routing and signalling messages), emergency telecommunications, real-time voice and video services, data services, virtual private network (VPN) services, as well as traditional ‘Best effort’ traffic. In such an environment, it is important to assign priority classifications and establish rules for service restoration such that critical services (e.g., control plane traffic and emergency telecommunications) are recognised and restored over other services in case of network overloads or failures. As service flows can be expected to traverse multiple network domains, priority classification is an important step in the development of the necessary signalling protocol extensions as well as of the mechanisms for enabling preferential restoration of critical services (ITU, 2007). The priority level classification is based on the following premise: “under reduced bandwidth conditions resulting from network failure, the critical issue for next generation network is the ability to recognize and restore higher priority traffic flows over others” (ITU, 2007). The priority level recommendations proposed by the International Telecommunication Union (ITU) strictly relate to the relative importance of traffic classes from this perspective (ITU, 2007)."
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