North Electric/ITT TRS-D for DSS/ITT 1210
(last updated: 16-May-2015 09:31)
Periodical Articles and Conference Papers
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"Evolution of a Digital Switching System to Include Integrated
Operator Services", NTC'79 paper 28.5.
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"Toll Traffic Looks Rosy in Roseville", Telephony 202:6 Feb 8 1982 pgs
30-34.