Documents - TCI Library

1985 AT&T Phone Flyer - Service Merchandise

paul-f@verizon.net (Paul F) — Sat, 12 Sep 2026 20:40:07 -0700

4 pages. AT&T Phone Booth logo. Nomad 4000 Cordless, 2100 Answering System, Add-an-Outlet Installation Kit, Trimline (desk and wall), Princess, Traditional (rotary and TouchTone, desk and wall), cords and jacks, plus a coupon offer. Found in a Princess CS2702BMG box. Contributed by Paul Fassbender.

1993 AT&T Signature Princess 2703 Press Release

paul-f@verizon.net (Paul F) — Mon, 31 Aug 2026 11:15:17 -0700

Press Release, Nov 3, 1993. Highlights new technologies, colors and leasing benefits. Plus free shipping. Contributed by Paul Fassbender.

BTL 1975 - Switching Technology Chronology 1925-1975 - extract

paul-f@verizon.net (Paul F) — Fri, 28 Aug 2026 10:25:38 -0700

12 pages. Extracted from: A History of Engineering and Science in the Bell System, Switching Technology (1925-1975), pages 605-616 by Paul Fassbender.

BTL 1961 - Dates in American Telephone Technology

paul-f@verizon.net (Paul F) — Wed, 26 Aug 2026 15:39:53 -0700

148 pages. By Dean Hanscom, Historian, BTL. Covers topics from prehistory through the mid-1950s. From the author's introduction:

This book lists important facts and dates for ready reference. It does not
elaborate and references are given only as sources for the dates indicated: other
and more detailed references may exist. With exceptions, 1956 is the closing date:
later advances must in general be covered in later editions.
The references are (with only a few exceptions) to published articles and books.
All such publications are in Bell Laboratories Library, Historical Collection, or
files. References to original laboratory notebooks and files are not given. Different
authors sometimes quote different dates for the same event; I have tried to establish
facts or a weight of evidence from published sources, but in some cases there
are unresolved differences. In a book of this scope, some errors are inevitable.

Contributed by the Connections Museum.

502-515-441 i2 Dec68 - 2511-type Connections

paul-f@verizon.net (Paul F) — Tue, 11 Aug 2026 09:53:48 -0700

The 2511F is equipped with a D20J mounting cord (spade-tipped conductors) and the 2511H is equipped with a D20K mounting cord (plug-ended). Includes a new Fig. 5 showing Secretarial Service connections. Contributed by Paul Fassbender.

DFMP-0-0 i6 Apr77 - Table of Contents - Divisions A-J

paul-f@verizon.net (Paul F) — Sat, 11 Jul 2026 14:37:41 -0700

14 pages. Dial Facilities Management Practices. Contributed by Sam Etler.
Find selected sections of the practices at: telecomarchive.com/dfmp.html

82 - BTL 100-393 Jun82 - KS Specification Index

paul-f@verizon.net (Paul F) — Sat, 11 Jul 2026 14:07:30 -0700

314 pages. Numerical and Classified Checking List. Some entries with BSP references. KS-Specification List.
Contributed by Sam Etler. Pagination and Bookmarks by Paul Fassbender.

BSFEP A-2 Jan76 - Traffic Theory and its Application

paul-f@verizon.net (Paul F) — Sat, 11 Jul 2026 12:33:49 -0700

53 pages. Business Services Facilities Engineering Practice (BSFEP).

Provides explanations of the various theories underlying traffic capacity tables and curves as well as practical application of these tables and curves.
Contributed by Sam Etler.

28ca - Railway Train Dispatching Tel Systems

paul-f@verizon.net (Paul F) — Mon, 06 Jul 2026 11:40:24 -0700

89 Pages. Includes a 22 page introduction and system description followed by an alphabetic catalog of telephones, components and supplies. Contributed by Tim Fox. Scanned and OCR by Sam Etler, Bookmarks and processing by Paul Fassbender.

Reminiscences of the Telephone in Boston 1877-1914 N W Lillie 1932

r.h.enthoven@infc.info (Remco E) — Fri, 03 Jul 2026 16:04:45 -0700

Scanned and processed by Remco Enthoven

Nathaniel W. Lillie’s reminiscences offer a vivid, personal chronicle of the birth and growth of the telephone industry in Boston from 1877 to 1914, blending his own life story with the broader narrative of technological and social transformation.

No 5 Crossbar - WE 5ETS for 5ESS Electronic Translation

paul-f@verizon.net (Paul F) — Sat, 27 Jun 2026 16:29:20 -0700

No 5 Crossbar. Undated. Translations without cross-connections and Modernized AMA recording using Western Electric's new No. 5 Electronic Translation System for No. 5 crossbar. With 3A Processor.Contributed by Steve Cichorsky and Andrew Cook.

C43.151 i2 Jan60 - Auxiliary Signals ID

paul-f@verizon.net (Paul F) — Sun, 17 May 2026 14:38:22 -0700

KS-16301 and KS-8000 series - Bells, Horns and Chimes. Contributed by Jeremy Walters.

ABC of the Telephone - Homans - 1904

paul-f@verizon.net (Paul F) — Sun, 10 May 2026 17:40:18 -0700

380 pages. 77MB. Many illustrations. ABC of the TELEPHONE, James E. Homans, 2nd Ed. Revised 1904. Contributed by Ralph Meyer.

52may BSTJ p443 - Experimental Electronically Controlled Auto Switching Sys - with "Essex" Subscriber Set - Annotated

paul-f@verizon.net (Paul F) — Mon, 27 Apr 2026 18:19:22 -0700

26 pages. ECSS. An Experimental Electronically Controlled Automatic Switching System, By W. A. MALTHANER AND H. EARLE VAUGHAN, Bell System Technical Journal (BSTJ), May 1952.

Annotated for reference in conjunction with the description of the "Essex" telephone on page 4-11 of "Telephone Dials and Pushbuttons" by Stanley Swihart.

A concept set with calculator-style dial for pre-set dialing is described in both articles, and photos of a set can be viewed here:
http://www.paul-f.com/weproto.html#Other

Contributed by Paul Fassbender

C30.002 i6 May55 - Transmission Zoning

paul-f@verizon.net (Paul F) — Sun, 22 Mar 2026 16:39:15 -0700

1.01 This section is reissued to provide the installer and repairman with information regarding the type of transmitter and receiver associated with the proper hand set, that should be used in each of the transmission zones. This section has been revised to incorporate information covering the transmission zoning of F4 and F5 hand sets equipped with T1 transmitter units and U1 receiver units.

Contributed by Paul Fassbender.

500-110-100 SW Add iA Mar59 - Transmission Zoning

paul-f@verizon.net (Paul F) — Sun, 22 Mar 2026 14:52:05 -0700

Southwest Bell Telephone Addendum. Authorizes the use of 5300-type telephone sets in Zone 2 if they are equipped with a G1 handle containing an F1 transmitter and a U1 receiver. Contributed by Paul Fassbender.

500-110-100 SW Add iB Apr68 - Transmission Zoning

paul-f@verizon.net (Paul F) — Sun, 22 Mar 2026 14:46:05 -0700

Southwest Bell Telephone addendum. Eliminates zones 2 and 5. Only zone L need be specified in the "TZ" (Transmission Zone) block on the service order, if applicable.

500-110-100 i3 Mar59 - Transmission Zoning

paul-f@verizon.net (Paul F) — Sun, 22 Mar 2026 14:38:40 -0700

Renumbered from C38.003 i3 Mar59. Contributed by Paul Fassbender.

500-110-100 i4 Feb64 - Transmission Zoning

paul-f@verizon.net (Paul F) — Sun, 22 Mar 2026 14:35:07 -0700

Eliminates zone 5-2. Updates the sets covered. Contributed by Paul Fassbender.

C38.003 i2 Jan58 - Transmission Zoning

paul-f@verizon.net (Paul F) — Fri, 20 Mar 2026 15:43:34 -0700

Contributed by Dennis Hock. OCR by Paul Fassbender.