pdf 991.006.04 I1-se Popular

By 1122 downloads

Download (pdf, 716 KB)

991.006.04_I1-se.pdf

991.006.04 I1-se

PBX Systems - Range Chart - Trunk and Station Conductor Loop
Ranges for PBXs Connected To Panel Central Offices Having 635-Ohm
Subscriber Conductor Loop - 50-Ohm Talking Battery Feed Circuit - AC-DC
or Superimposed Ringing (72, 80, or 84 Volts Minimum AC Component) -
Minimum Office Voltage of 21V (Floating), Issue 1, 1960-05-01

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!

Who's online

We have 2245 guests online