You are here: Home > Browse the Library > Bruce Crawford Library > Western Electric > WEco Switching Documents > WECo Crossbar > No. 5 Crossbar - Wire Spring Relay Circuit - Vol 1

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Download selected

Folder No. 5 Crossbar - Wire Spring Relay Circuit - Vol 1

VOLUME I - WIRE SPRING No. 5 CROSSBAR SYSTEM

Section 1 — General Description of the Wire Spring No. 5 Crossbar System (129p)
Section 2 — Dial Tone Job (38p)
Section 3 — Dialing the Called Number (13p)
Section 4 — Pretranslation (22p)
Section 5 — Intraoffice Call (68p)
Section 6 — Outgoing Calls Using Senders (30p)
Section 7 — Incoming Calls (24p)

Documents

Select Toggle Title Date Download
pdf ATT 5XB vI Mar55 Wire Spring Sec7 - Incoming Calls (287 downloads) Popular Download (pdf, 3.56 MB)
pdf ATT 5XB vI Mar55 Wire Spring Sec6 - Outgoing Calls Using Senders (270 downloads) Popular Download (pdf, 4.20 MB)
pdf ATT 5XB vI Mar55 Wire Spring Sec5- Intraoffice Call (452 downloads) Popular Download (pdf, 10.45 MB)
pdf ATT 5XB vI Mar55 Wire Spring Sec4 - Pretranslation (269 downloads) Popular Download (pdf, 3.20 MB)
pdf ATT 5XB vI Mar55 Wire Spring Sec3 - Dialing the Called Number (325 downloads) Popular Download (pdf, 1.58 MB)
pdf ATT 5XB vI Mar55 Wire Spring Sec1 - General Description (669 downloads) Popular Download (pdf, 24.07 MB)
pdf ATT 5XB vI Mar55 Wire Spring Sec2 - Dial Tone Job (333 downloads) Popular Download (pdf, 5.18 MB)

New User?

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

Recent Contributors

Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.

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

30 Latest Additions

Who's online

We have 894 guests online

Hints for using the TCI Library

"Menu Bar" for site navigation.
Many menu choices are hidden until you mouse over words in the black Menu Bar (above).  If you want help getting started, see the links under the word "Introduction" in the Menu Bar.
 
The user interface is oriented toward the user’s choice to either Browse or Search for information.  The Browse the Library menu entry offers many quick links to move around the Library quickly.  Try it!

Three search options.
The Library’s keyword-based searches, called Basic Search and Advanced Search, accept keywords as short as 2 characters (WE, AE, etc.) and search strings up to 255 characters.  If you get more than 1,000 items, refine your search or try the Google Search option.
 
When selected from the Menu Bar, Google only searches for files in the TCI Library.
 
Library INBOX.
The INBOX may hold some files that have been submitted but not fully processed into the Library.  These are often topics of current discussion on the TCI Email Group. Items in the INBOX are not found using Basic or advanced searches, but ARE found by a Google Search.
 
Remember to check the INBOX if you don't find something with the other searches.
 
Finding BSPs.
Many BSPs are currently only identified by BSP number. If a text search doesn’t produce a BSP, try looking in one of the many BSP index documents to find a BSP number for the product you are researching just as you would do if referencing a paper library of the BSPs. Then enter the BSP number in the search box.
 
Finding CDs and SDs.
Some related CDs and SDs are filed in different areas. Try searching for just the numeric portion of the name.  Remember to check the INBOX if you don't find something with the Basic or Advanced searches -- or use the Google search.
 
Compact Category Listing.
When browsing, to change the category listing view from normal to compact, click on Browse the Library in the black menu bar.
 
To change from compact to normal view, click on Document Repository in the drop down under Browse the Library.