100 Years of Telephone Switching, Part 1In this work, not only the principles by which manual and automatic systems function are distinguished, but also the background to the invention is given. This is done from the perspective of an unbiased international observer. |
Contents
Chapter I2 A technological history book | 8 |
Chapter I3 Language issues affecting this book and switching | 14 |
Chapter I5 Sources used for the preparation of this book | 27 |
Chapter I6 Telephone statistics and their pitfalls | 38 |
Chapter II1 Manual switching | 47 |
Chapter II2 The infancy of automatic telephony and the STROWGER system in North | 58 |
Chapter II3 Beginnings of automatic telephony in Europe | 73 |
Chapter II4 Semiautomatic systems | 81 |
Chapter VI1 Main stages in the development of the telephone from 1910 to 1930 | 247 |
Chapter VI2 Structures of telephone operating enterprises in 1930 | 253 |
Chapter VI4 State of telephone technology in 1930 | 273 |
Chapter VI5 Situation in 1930 and 1955 of telephone development throughout | 279 |
Chapter VI6 State of telephone technology in 1955 | 289 |
Chapter VII1 Telephone signalling a branch of telephone and telephone switching | 305 |
Chapter VII2 Around 1930 early developments in the automatic trunk service | 313 |
Chapter VII3 Need for basic numbering routing switching and transmission plans prior | 325 |
the broad sweep of technological development | 87 |
Chapter III2 The economic climate during the years 18801910 and its effect on | 99 |
struc | 115 |
Chapter III5 Development of the telephone service in 1890 | 126 |
Chapter III7 Development of the telephone service in 1910 | 137 |
Chapter III8 State of switching technology in 1910 | 148 |
Chapter IV1 The LORIMER system | 159 |
the PANEL and ROTARY sys | 165 |
Chapter IV4 The ROTARY system | 175 |
Chapter IV5 The LM ERICSSON 500point selector system | 183 |
ups and downs in | 190 |
Chapter V1 Twomotion stepbystep systems | 207 |
a new family | 222 |
Chapter V3 The EMD system | 233 |
Chapter VII4 Charging in the automatic trunk service Methods used | 337 |
Chapter VII5 Automatic trunk international signalling developments between 1940 | 347 |
Chapter VIII1 Birth and early years of the crossbar system | 359 |
the AT T crossbar No 1 | 378 |
the AT T No 4 crossbar | 392 |
Chapter VIII5 The breakthrough of the crossbar system outside the United States | 400 |
Chapter VIII6 A nearuniversal consensus for the architecture of post1950 crossbar sys | 411 |
Chapter VIII7 The LM ERICSSON crossbar systems | 417 |
Chapter VIII8 The PENTACONTA crossbar system The 5005 ATE crossbar system | 433 |
Chapter VIII9 Japanese crossbars | 450 |
Chapter VIII10 Crossbar systems in the socialist countries | 459 |
Credits | 475 |
Common terms and phrases
Administration American Antwerp Automatic Electric Company automatic exchanges automatic service automatic telephone automation bars Bell Laboratories BELL System cable calling subscriber CCIF CCITT Chapter connection contacts countries crossbar switch crossbar systems crossbar units device dial dialling digits EMD system engineers Europe German group selection unit horizontal industrial inlets installed junctor large number line selection unit link system LM Ericsson long-distance manual manufacturing marker matic ment multiselector Netherlands Numbering Plan operation outgoing outlets Paris patents PENTACONTA pulses relay ROTARY system scriber Section selector semi-automatic Siemens signalling system stage step-by-step Stockholm STROWGER switch studies subscriber lines Sweden switching equipment switching system Switzerland technical technological tele telecommunication telegraph telephone exchanges telephone network telephone service telephone stations telephone switching Televerket tion toll traffic transmission trunk circuits trunk exchanges uniselector United Kingdom vertical Weilheim Western Electric wiper wires