[Traffic Service Position System No. 1. 11 articles, see below]. - [FIRST DESCRIPTION OF BELL'S TRAFFIC SERVICE POSITION SYSTEM (TSPS)]

New York, American Telephone and Telegraph Company, 1979. 8vo. Original full green cloth. The entire volume 43, nr. 2 of ""The Bell System Technical Journal"". Library stamp to pasted down front free end-paper. Minor bumping to extremities. A nice and clean copy. [Entire volume: pp. 809-1367].

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First edition of the first description of Bell System's Traffic Service Position System (TSPS). It was designed by Bell Labs in Columbus, Ohio to replace traditional cord switchboards. Research at Bell Systems was aimed at finding ways to reduce operator labor which at that time was was the largest expenditure when operating a telephone network. ""A new cordless operator position was designed to illustrate how this operator service might be implemented. Trials at New York Telephone Co. demonstrated the feasibility of both the customer dialing of the prefix and the efficiency of the new operator's position. After the trial, a development was started to add such positions, by then known as the ""Traffic Service Position"" [...]. It was an example of the electronic art forcing out the old electromechanical art with many vested interest. The collection of trunks, a ferreed switching network, an SPC, and the positions formed a system called the ""Traffic Service Position System"". Being the first, it was called the ""No. 1 TSPS"". (Chapuis,, 100 Years of Telephone Switching (1878-1978), 1982, p. 170).Articles contained in the Traffic Service Position System No. 1-issue:1. Staehler, R.E." Hayward, W.S. Jr. Traffic Service Position System No. 1: Recent Developments, An Overview. Pp. 1109-1118.2. Bauman, S.M. DiPietro, R.S. Jaeger, R.J. Jr. Remote Trunk Arrangement: Overall Description and Operational Characteristics. Pp. 1119-1135.3. Brune, W.L. Piereth, R.J. Weygand, A.G. Remote Trunk Arrangement and Position Subsystem No. 2: Transmission and Signaling Considerations. Pp. 1137-1165.4. Bulfer, A.F. Gibbons, W.E. Hackett, J.A.Remote Trunk Arrangement: Hardware and Software Implementation. Pp. 1167-1205.5. Berger, M. Dalby, J.C. Jr. Ransom, V.L. Prell, E.M. Automated Coin Toll Service: Overall Description and Operational Characteristics. Pp. 1207-1223.6. Clark, G.T. Streisand, K. Larson, D.H. Station Signaling and Announcement Subsystem: Hardware for Automated Coin Toll Service. Pp. 1225-1249.7. Ahmari, R. Hsu, J.C. Potter, R.L. Reed, S.C.Automated Coin Toll Service: Software. Pp. 1251-1290.8. Youngs, E.A. Bushnell, W.J. Barone-Wing, A. Automated Coin Toll Service: Human Factors Studies. Pp. 1291-1305.9. Stanaway, J.J. Jr. Victor, J.J. Welsch, R.J. Pp. Software Development Tools. Pp. 1307-1333.10. Delatore, J.P. VanHaften, D. Weber, L.A. System Verification and Evaluation Procedures. Pp. 1335-1346.11. Riddell, G. Swanson, C.R. Steinbrenner, R.T. Operator Training Facilities. Pp. 1347-1357.