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consequence a number of another emergency hunk alerting methods have been subserved and a large number of misconceptions have arisen and penniless systems installed via hurried implementation projects.
The varied solutions promoted fall roughly into 2 camps. Firstly there are the text based, individually addressed, pre-subscribed type systems that empower individuals to enrol for the receipt of text messages sent to cellular phones and other wireless email or messaging devices. Secondly, there are the broad area, public notice type systems that distribute text or voice messages, or stimulate non-specific aloud warning devices, that are spread about the public areas of a campus or in areas where large numbers of folk congregate such as lecture lobbies [link widoczny dla zalogowanych], classrooms [link widoczny dla zalogowanych], cafeteria’s etc. In adding to the above, there are some microcomputer network based systems that send messages to calculator screens throughout a campus network by email or screen pop-up.
Each of the upon systems has its pros and cons, whatsoever it is my opinion that reliance on the personally addressed, SMS or text message based system as the primary, and occasionally only, means of alert is precarious. These systems and their proponents are engendering a disloyal sense of security and production promises almost their effect that are doomed to lead to calamity whether these systems are implemented as the sole and basic source of emergency alerts.
Cellular based text messaging systems are not real time and are essentially one to one communications systems which makes them too slow and unreliable for the delivery of emergency messages in a timely and profitable manner to a large number of recipients in a small area. Because the originator of a text message is not communicating directly with the recipient of the message merely is sending the message into a network [link widoczny dla zalogowanych], unsupervised by the originator, which manages the delivery based on nameless criteria and system priorities, it can take from several minutes to several hours or even days to bring a single message to a large number of recipients.
One message sent to 1,000 recipients, for example, requires 1,000 individual transmissions to be managed at the network. Whilst very great numbers of text messages are sent everyday to calls throughout the world and to a definite amplitude arrive reasonably presently after having been initiated, cellular based SMS/Text systems rely on the recipients of that message traffic being geographically scattered. When messages are generated to be sent to a large number of recipients in a relatively small geographical space, such for on a campus campus, It is highly unlikely that the network capability, even when scatter along a number of carriers, would be ample to deliver those messages quickly ample for the message to be deeded on in a timely style alternatively for the system to be regarded as a authentic manner of cautious.
Tests of such systems namely have been carried out on universities have shown that it can comesintoseffect apt several hours for a single message to be delivered to entire subscribers and the testing that has been carried out has been done beneath ideal conditions. In a test scenario, because there is no tangible emergency, the information does not generate the escalation of respondent vehicle that a real crisis message would which would beyond shock on web congestion.
Apart from network capacity issues with adore to the initial message transportation, once emergency messages begin to arrive on phones, the networks will quickly chance saturated with texts and voice calls initiated by the subscribers phoning friends and kin. The networks are likely to, and have, in a number of such emergency locations, broke under the volume of traffic!
At any one time a large number of phones in a campus surroundings are likewise presumable to be switched off or distracted to discourage disturbance in lectures and this exacerbates the congestion problem as networks try to automatically resend unacknowledged messages.
Random receipt of the initi