ITEM NAME	1979-bell-ess
DESCRIPTION	New York City and Sedona, Arizona have something in common: the latest Bell System technology. Advertisement from the July 1979 issue of OMNI promoting the new Electronic Switching Systems (ESS) being implemented in the Bell Telephone System. (There are almost no non-digital switching systems in use today.) (1979)
ZIP AVAILABLE	1979-bell-ess.zip (672K)

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