INDEX
The page numbers of this volume will be found at the bottom of the pages; the numbers at the top refer only to the section.
A
Automanual system [218]
automatic distribution of calls [223]
automatic switching equipment [222]
building up a connection [224]
characteristics of [218]
operation [219]
operator's equipment [220]
setting up a connection [224]
speed in handling calls [224]
subscriber's apparatus [219]
Automatic desk stand [158]
Automatic Electric Company's telephone system [149]
automatic sub-offices [201]
connector [185]
function of [185]
location of [186]
operation of [186]
first selector operation [179]
function of line switch [152]
line switch [153], [163]
bridge cut-off [173]
circuit operations [167]
guarding functions [173]
line and trunk contacts [164]
locking segment [172]
master switch [171]
relation of, to connectors [174]
structure of [166]
summary of operation [174]
trunk ratio [165]
trunk selection [165]
multi-office system [196]
party lines [202]
release after conversation [196]
rotary connector [202]
second selector operation [182]
selecting switches [153], [175]
release mechanism [178]
side switch [175]
subdivision of subscribers' lines [152]
subscribers' station apparatus [158]
operation [160]
bell and transmitter springs [160]
ground springs [160]
impulse springs [161]
release springs [163]
ringing springs [163]
salient points [163]
trunking [154]
connector action [157]
first selector action [156]
line switch action [154]
second selector action [156]
two-wire automatic systems [203]
two-wire and three-wire systems [157]
underlying feature of trunking system [153]
Automatic telephone systems [135]
arguments against [135]
attitude of public [141]
complexity [136]
expense [140]
flexibility [140]
subscriber's station equipment [142]
automatic vs. manual [143]
comparative costs [142]
definition [135]
methods of operation [143]
fundamental idea [147]
grouping of subscribers [145]
local and inter-office trunks [148]
Lorimer system [144]
magnet vs. power-driven switches [144]
Automatic telephone systems
methods of operation
multiple vs. trunking [145]
outline of action [146]
Strowger system [143]
testing [148]
trunking between groups [145]
Automatic wall set [158]
B
Blocking sets [355]
Busy test [48]
busy-test faults [50]
potential of test thimbles [49]
principle [49]
C