Telecommunications time measurement

Online data exchange is now possible with the standardised automated measurement methods being employed combined with telecommunication links. This data exchange allows for timely public air quality data to be sent via video text, the Internet, telephone and smartphones, as requested in the legislation. 

In order to set up a data session between two terminals, some CSCF must be traversed by call session requests and answers. As a consequence, the number of sessions handled by a single CSCF server per time unit is chosen as a performance measure of a signalling network. The problem of meeting typical requirements for a telecommunication network in terms of service availability is faced by adopting parallel redundancy technique for network elements, given a demand profile. 

Typically, telecommunication networks ability to avoid or cope with random failures is measured in three ways (Snow et al. 2000) Reliability, Availability, Survivability. Reliability is the probabUity that a network performs a designated set of functions under certain conditions for a time greater than a specified operational time. Availability is the probability that a network performs its functions at any given instant imder certain conditions. Survivability measures the abihly of a network to perform its functions given network infrastructure component failures, resulting in a partial service outage. 

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