Modifications to standard Western Electric keypads for Elcotel Olympian controller

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Changes need to be done to the standard keypad assembly in order to work correctly with the Olympian 5501 controller pictured below, as documented by Elcotel, 1987. Standard keypad may work to some extent, but it usually fails once the voice prompt is to be played. Unfortunately, no instructions (yet) for the APC and other type keypads.

NOTE: TB2 is located on the back of the keypad.
TT = Touch Tone (keypad)

1D2 WITH 70C (ELECTRONIC) KEYPAD

  1. MOVE GREEN-WHITE WIRE (TT) FROM TB2-1 TO TB2-12
  2. MOVE ORANGE-BLACK, BLUE-BROWN, VIOLET WIRES (ALL TT) FROM TB2-10 TO TB2-13
  3. MOVE ORANGE-RED WIRE (TT) FROM TB2-15 TO TB2-1
  4. MOVE ORANGE-WHITE WIRE (TT) FROM TB2-13 70 TB2-10
  5. MOVE SLATE-WHITE WIRE (HOOKSWITCH) FROM TB2-14 TO TB2-8
  6. MOVE YELLOW WIRE (HANDSET) FROM TB2-8 TO TB2-14
  7. MOVE WHITE-BLUE WIRE (TT) FROM TB2-8 TO TB2-4
  8. MOVE WHITE WIRE (TT) FROM TB2-4 TO TB2-14
  9. MOVE BLACK WIRE (HANDSET) FROM TB2-6 TO TB2-2
  10. MOYE RED-GREEN WIRE (TT) FROM TB2-2 TO TB2-6

1D2 WITH 70A OR 70B KEYPAD

  1. MOVE GREEN WIRE FROM TB2-8 TO TB2-14
  2. MOVE SLATE/WHITE WIRE FROM TB2-14 TO TB2-8

MODIFICATION TO STANDARD WESTERN ELECT. (1C2) KEYPAD

  1. MOVE GREEN WIRE FROM TB2-4 TO TB2-1
  2. MOVE WHITE WIRE FROM TB2-2 TO TB2-4
  3. MOVE RED WIRE FROM TB2-12 TO TB2-9
  4. MOVE ORANGE-BLACK WIRE FROM TB2-11 TO TB2-3
  5. MOVE BLACK (HANDSET) WIRE FROM TB2-3 TO TB2-2
  6. MOVE SLATE-WHITE WIRE FROM TB2-14 TO TB2-8
  7. MOVE YELLOW (HANDSET) WIRE FROM TB2-8 TO TB2-14
  8. MOVE ORANGE-WHITE WIRE FROM TB2-12 TO TB2-3

Complete wiring after modifications

70C KEYPAD

70A OR 70B KEYPAD

1C2 KEYPAD