AT&T Miscellaneous Switching Systems

(last updated: 16-May-2015 09:31)
 

Step-by-Step

  1. EOBS2 pgs 398-399, 400, 400-402, 454, 461, 463.
     
  2. "New Step-By-Step Equipment", BLR 5:1 Sep 1927 pgs 7-11.

Panel

  1. EOBS pgs 238-239.
     
  2. EOBS2 pgs 399,400.
     
  3. "The Panel System", BLR 9:11 Jul 1931 pgs 523-528.

No. 1 Crossbar (1XB)

  1. EOBS pgs 240-243.
     
  2. EOBS2 pgs 399,402-406, 447-448, 448-450, 454, 461.
     
  3. "Crossbar Dial Telephone Switching System", BSTJ 18:1 Jan 1939 pgs 76-118.

Crossbar Tandem (XBT)

  1. EOBS pgs 267-268.

3CL Toll Boards

  1. EOBS2 pgs 438-439.

Traffic Service Position (TSP)

  1. EOBS2 pg 438.
     
  2. "Crossbar Tandem TSP", BLR 42:5 May 1964 pgs 146-151.
     
  3. "Designing the Traffic Service Position Console", BLR 42:6 June 1964 pgs 208-212.