The 5ESS Switch is a Class 5 telephone electronic switching system originally developed by Western Electric and currently sold by Western Electric's descendant, Alcatel-Lucent. This digital central office telephone circuit switching system is used by many telecommunications service providers.
Read more about 5ESS Switch: History, Architecture, Operations, Administration, Maintenance, and Provisioning
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“Uncritical semantics is the myth of a museum in which the exhibits are meanings and the words are labels. To switch languages is to change the labels.”
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