5ESS Switching System
BGSDDAEF74BE44443855
The 5ESS Switching System is a Class 5 telephone electronic switching system developed by Western Electric for the American Telephone and Telegraph Company (AT&T) and the Bell System in the United States. It came into service in 1982 and the last unit was produced in 2003.
Read more on WikipediaHave feedback on this skill? Let us know.