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- (189) Wed 30 Oct 91 21:23
- By: Maurice R Baker
- To: All
- Re: Oldest 1ESS in USA Retires
- St:
- ------------------------------------------------------------------------------
- @PTH 1:340/201.0@Fidonet
- From: jj1028@homxc.att.com (Maurice R Baker)
- Newsgroups: comp.dcom.telecom
- Subject: Oldest 1ESS in USA Retires
- Organization: AT&T Bell Laboratories
-
-
- From {Bell Labs News} of 10/28/91:
-
- ----Picture of a row of craftpersons with bolt cutters severing
- many multi-pair cables---
-
- These New Jersey Bell technicians are actually in the process of
- taking a very well-behaved -- and the nation's oldest -- 1ESS(tm) out
- of service. The switch became the world's first commercial electronic
- switching system when it was installed in Succasunna, NJ in 1965. It
- was replaced with a 5ESS(tm) on September 28th.
-
- The cutover was accomplished in three steps. First, the new
- 5ESS was installed and hooked up to the incoming lines -- which were
- also still going to the old switch -- but not powered up. Then, at
- 1:00 AM, when there is relatively little traffic on the old switch,
- the cables coming in to the 1ESS were quickly cut. Once all the lines
- were cut, the new switch was turned on. The whole operation took only
- a few minutes, and agencies involved in emergency services were
- notified in advance of the brief service outage.
-
- The 1ESS design project, which was conducted at Whippany in the
- early 60's, was the largest single development effort undertaken by
- the Bell System up to that point, occupying more than 300 engineers
- and technicians.
-
- AT&T Network Systems and New Jersey Bell are considering
- donating part of the retired switch to the Smithsonian Institution.
-
- --- Fred-Uf 1.8(L)[BETA]
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- @Message-ID: <telecom11.879.6@eecs.nwu.edu>
- @Date: 30 Oct 91 21:23:04 GMT
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