TELECOM Digest OnLine - Sorted: Non-Bell ESS?

Non-Bell ESS?

hancock4@bbs.cpcn.com
6 Jul 2005 10:59:05 -0700

The Bell System put its first test call through a laboratory
Electronic Switching System in 1958 and had a prototype system in
public service in the early 1960s.

Would anyone know when other telephone companies, either in the
U.S. or abroad, developed and implemented their own ESS? For
instance, when did Automatic Electric put one in service?

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