Engineering and Operations in the Bell System |
Contents
Part OneIntroduction and Overview | 1 |
A Typical Telephone Call | 27 |
Network Fundamentals | 45 |
Copyright | |
16 other sections not shown
Common terms and phrases
analog AT&T automatic automatic message accounting baseband basic Bell Laboratories Bell System BISCUS/FACS cable pairs calls carrier systems central office coaxial coin connection cost Crossbar crossbar switch customer's data sets developed dial tone economic electronic Electronic Switching Systems engineering example facilities network frequency functions input installation interconnection interface key telephone key telephone systems load located long-haul loop loss maintenance mastergroup measurements modulation multiplex noise off-hook on-hook operating companies output path percent performance PICTUREPHONE plant private-line public telephone network pulses radio records repeater route Section served shown in Fig signal special-service circuits station switching network switching systems tandem telephone company telephone service telephone set teletypewriter tie trunks tion traffic networks transmission facilities transmission systems transmitted trouble trunk group unit voice-frequency voiceband voltage Western Electric wire center