switchboard

At automatic telephone exchanges {switchboard}|, dial signals activate switches that create a circuit between dialing and dialed telephones. At manual telephone exchanges, operator operates switches.

Related Topics in Table of Contents

Practical Affairs>Machine>Kinds>Electronic

Whole Section in One File

7-Machine-Kinds-Electronic

Drawings

Drawings

Contents and Indexes of Topics, Names, and Works

Outline of Knowledge Database Home Page

Contents

Glossary

Topic Index

Name Index

Works Index

Searching

Search Form

Database Information, Disclaimer, Privacy Statement, and Rights

Description of Outline of Knowledge Database

Notation

Disclaimer

Copyright Not Claimed

Privacy Statement

References and Bibliography

Consciousness Bibliography

Technical Information

Date Modified: 2022.0224