You are here: Home > Telephony 101

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

 

Files used for illustration to support the Telephony 101 discussions held on the TCI Listserv beginning in November 2012.  See the first document in the list below for the event announcement. The last document is an errata sheet developed during the event that should be added to your copy of the book

Discussion was based on the book "Old Time Telephones!"  by Ralph Meyer.  Info about and sources of the book are available here: http://pws.goeaston.net/oldtimetelephones/index.html.  

Using these documents, you can work through the book and discussions at your own pace.

Telephony 101

Filename Size Date & Time
An Adobe Acrobat file 00a Telephony 101 -- An Announcement for TCI List 13.31 KB 2017-11-21 05:33:12
An Adobe Acrobat file 00b Telephony 101 -- Archive of Notes 8.8 KB 2017-11-21 05:33:12
An Adobe Acrobat file 00c Telephony 101 -- Pop Quiz after Chapter 7 21.02 KB 2017-11-21 05:33:12
An Adobe Acrobat file 00d Telephony 101 -- Epilog 12.97 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01a Telephony 101 -- Voltage, Currents, and Resistance 30.23 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01b Telephony 101 -- Electromagnets and the Telegraph 13.45 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01c Telephony 101 -- The Reis Telephone 19.03 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01d Telephony 101 -- The Harmonic Telegraph 21.03 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01e Telephony 101 -- The Gallows Telephone 21.54 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01f Telephony 101 -- Bell's Patent 17.94 KB 2017-11-21 05:33:12
An Adobe Acrobat file 01g TCI Article on Bell vs Gray 785.55 KB 2017-11-21 05:33:12
An Adobe Acrobat file 02a Telephony 101 -- Resistance Transmitters 20.1 KB 2017-11-21 05:33:12
An Adobe Acrobat file 02b Telephony 101 -- Non-positional Transmitters 15.91 KB 2017-11-21 05:33:12
An Adobe Acrobat file 02c Telephony 101 -- Transmitter Specifications 25.66 KB 2017-11-21 05:33:12
An Adobe Acrobat file 03a Telephony 101 -- Bell's Receiver 16.81 KB 2017-11-21 05:33:12
An Adobe Acrobat file 03b Telephony 101 -- Receiver Specifications 20.62 KB 2017-11-21 05:33:12
An Adobe Acrobat file 04a Telephony 101 -- Transformers 23.35 KB 2017-11-21 05:33:12
An Adobe Acrobat file 04b Telephony 101 -- Matching Impedances 15.74 KB 2017-11-21 05:33:12
An Adobe Acrobat file 04c Telephony 101 -- Induction Coils 14.8 KB 2017-11-21 05:33:12
An Adobe Acrobat file 05 Telephony 101 -- Magnetos 15.94 KB 2017-11-21 05:33:12
An Adobe Acrobat file 06a Telephony 101 -- Polarized Ringers 13.5 KB 2017-11-21 05:33:12
An Adobe Acrobat file 06b Telephony 101 -- Condensers 20.33 KB 2017-11-21 05:33:12
An Adobe Acrobat file 06c Telephony 101 -- Selective Ringing 14.42 KB 2017-11-21 05:33:12
An Adobe Acrobat file 06d Telephony 101 -- Ringer Properties 16.19 KB 2017-11-21 05:33:12
An Adobe Acrobat file 07a Telephony 101 -- Switches and Dials 17.83 KB 2017-11-21 05:33:12
An Adobe Acrobat file 07b TCI Article on Pulse-toTone Converters 283.4 KB 2017-11-21 05:33:12
An Adobe Acrobat file 08 Telephony 101 -- Early Commercial Telephones 17.26 KB 2017-11-21 05:33:12
An Adobe Acrobat file 09 Telephony 101 -- Single-box Magneto Wall Phones 12.89 KB 2017-11-21 05:33:12
An Adobe Acrobat file 10 Telephony 101 -- Candlestick Desk Stands 13.62 KB 2017-11-21 05:33:12
An Adobe Acrobat file 11 Telephony 101 -- Handset Desk Stands 17.23 KB 2017-11-21 05:33:12
An Adobe Acrobat file 12 Telephony 101 -- Ringer Boxes Etc 17.74 KB 2017-11-21 05:33:12
An Adobe Acrobat file 13a Telephony 101 -- Combined Telephones 16.05 KB 2017-11-21 05:33:12
An Adobe Acrobat file 13b TCI Article on WE 302 Postage Stamp 366.95 KB 2017-11-21 05:33:12
An Adobe Acrobat file 14a Telephony 101 -- Standard Rotary Dial Telephones 693.91 KB 2017-11-21 05:33:12
An Adobe Acrobat file 14b Telephony 101 -- Touchtone and Other Telephones 17.45 KB 2017-11-21 05:33:12
An Adobe Acrobat file 15a Telephony 101 -- Principles of Std LB Circuit 18.11 KB 2017-11-21 05:33:12
An Adobe Acrobat file 15b Telephony 101 -- Wiring of Std LB Circuit 20.17 KB 2017-11-21 05:33:12
An Adobe Acrobat file 16a Telephony 101 -- Principles of the Booster Circuit 22.37 KB 2017-11-21 05:33:12
An Adobe Acrobat file 16b Telephony 101 -- Examples of the Booster Circuit 18.85 KB 2017-11-21 05:33:12
An Adobe Acrobat file 16c Telephony 101 -- Other Early CB Circuits 14.3 KB 2017-11-21 05:33:12
An Adobe Acrobat file 17a Telephony 101 -- WE Anti-sidetone Circuit 26.58 KB 2017-11-21 05:33:12
An Adobe Acrobat file 17b Telephony 101 -- Kellogg's Anti-sidetone Circuit 24.07 KB 2017-11-21 05:33:12
An Adobe Acrobat file 17c TCI Article on AST Clarification 450.92 KB 2017-11-21 05:33:12
An Adobe Acrobat file 17d Telephony 101 -- S-C Anti-sidetone Circuits 14.04 KB 2017-11-21 05:33:12
An Adobe Acrobat file 17e Telephony 101 -- AE Anti-sidetone Circuits 16.67 KB 2017-11-21 05:33:12
An Adobe Acrobat file 18a Telephony 101 -- Bridge Local Battery AST Circuit 101.83 KB 2017-11-21 05:33:12
An Adobe Acrobat file 18b Telephony 101 -- Other Local Battery AST Circuits 16.09 KB 2017-11-21 05:33:12
An Adobe Acrobat file 19a Telephony 101 -- Network Circuits and Varistors 19.12 KB 2017-11-21 05:33:12
An Adobe Acrobat file 19b Telephony 101 -- Touchtone Dialing 17.45 KB 2017-11-21 05:33:12
An Adobe Acrobat file 19c Telephony 101 -- Variations of the Network Circuit 15.58 KB 2017-11-21 05:33:12
An Adobe Acrobat file 20 Telephony 101 -- Mechanical Restoration 18.31 KB 2017-11-21 05:33:12
An Adobe Acrobat file 21 Telephony 101 -- Tests and Measurements 15.09 KB 2017-11-21 05:33:12
An Adobe Acrobat file 22a Telephony 101 -- Electrical Repair and Modification 14.66 KB 2017-11-21 05:33:12
An Adobe Acrobat file 22b Telephony 101 -- Regulations and REN Numbers 18.95 KB 2017-11-21 05:33:12
An Adobe Acrobat file Errata Jan 26 2016 Booklet Format 457.88 KB 2016-02-06 16:52:33
An Adobe Acrobat file Errata Jan 26 2016 Letter Format 535.86 KB 2016-02-06 17:12:48
An Adobe Acrobat file Errata Nov 2013 Booklet Format 1.05 MB 2017-11-21 05:33:12
An Adobe Acrobat file Errata Nov 2013 Letter Format 994.31 KB 2017-11-21 05:33:12

New User?

Read the articles under "Introduction" in the black menu bar above.

Recent Contributors

Thanks for new documents from Jim Hurtle, Ed Palazzo, Paul Fassbender, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Alan David, Dennis Hock, and Tim Griffin.

Please send a file to add your name to this list!

Who's online

We have 514 guests online