A History of Engineering and Science in the Bell System, Volume 3The Laboratories, 1975 - Electronics Vol. 3 prepared by A.E. Joel, Jr. and other members of the technical staff, Bell Telephone Laboratories; G.E. Schindler, Jr., editor. Includes bibliographies and indexes. [1] The early years (1875-1925) -- [2] National service in war and peace (1925-1975) -- v. 3. Switching technology (1925-1975) -- [4] Physical sciences (1925-1980) -- [5] Communications sciences (1925-1980) -- [6] Electronics technology (1925-1975) -- [7] Transmission technology (1925-1975). |
Contents
State of the Art in 1925 | 7 |
Introduction of Crossbar | 59 |
The Better Understanding of Switching | 87 |
Copyright | |
12 other sections not shown
Common terms and phrases
4A crossbar arrangement automatic automatic call distributor automatic message accounting Bell Labora Bell Laboratories Record Bell Labs Bell System Bell System Technical CAMA central office Chapter common-control Communications connection CONNECTOR cordless crossbar offices crossbar switches crossbar system crossbar tandem crosspoints cutover dial pulse digits direct distance dialing direct inward dialing distance dialing electromechanical electronic switching systems engineers equipment ferreed identified improved INCOMING TRUNK installation introduced JUNCTOR key telephone system line link link frame magnetic drum maintenance manual MARKER memory ment multifrequency operation OUTGOING TRUNK panel system placed in service positions processor REGISTER relays remreed routing SELECTOR served shown in Fig signaling STATION stored-program control switch unit switchboard switching network System Technical Journal tape tele teletypewriter terminals time-division tion toll switching TOUCH-TONE traffic transistor translator transmission trunk circuits trunk groups TSPS wire