US Payphones wiki by payphones.telesfor.org

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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)

• Often times keypad is marked as 60A or 60C, but it's actually reworked for 1D2 set, being de facto 70C. Pictured below is one example.
• Keypad I saw with the Elcotel set was not completely rewired. I would consider it just a guideline, I will follow up with the details. Always take a picture of the original wiring.
  

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

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

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

• TB2-1 ORANGE-RED (KEYPAD)
• TB2-2 (HANDSET MIC, COLORS VARY)
• TB2-3 (HANDSET MIC, COLORS VARY), RED (KEYPAD), YELLOW (SWITCH HOOK)
• TB2-4 WHITE-BLUE (KEYPAD), (HANDSET RCVR, COLORS VARY)
• TB2-5 NONE
• TB2-6 RED-GREEN (KEYPAD)
• TB2-7 BROWN, BROWN (BOTH KEYPAD)
• TB2-8 WHITE (SWITCH HOOK), SLATE-WHITE (SWITCH HOOK)
• TB2-9 ORANGE (SWITCH HOOK)
• TB2-10 ORANGE-WHITE (KEYPAD)
• TB2-11 ORANGE (SWITCH HOOK)
• TB2-12 GREEN-WHITE (KEYPAD), GREEN, GRAY, RED (ALL SWITCH HOOK)
• TB2-13 VIOLET, ORANGE-BLACK, BLUE-BROWN (ALL KEYPAD)
• TB2-14 (HANDSET RCVR, COLORS VARY), WHITE (KEYPAD)
• TB2-15 NONE
• TB2-16 GREEN (KEYPAD)

• TB2-1 BLACK, GREEN (KEYPAD)
• TB2-2 RED-GREEN (KEYPAD)
• 1B2-3 YELLOW (SWITCH HOOK), RED (KEYPAD), (HANDSET MIC, COLOR VARIES)
• TB2-4 WHITE (KEYPAD)
• TB2-5 ORANGE-RED (KEYPAD)
• TB2-6 (HANDSET MIC, COLOR VARIES)
• TB2-7 WHITE-BLUE (KEYPAD), (HANDSET RCVR, COLORS VARY)
• TB2-8 WHITE (SWITCH HOOK), SLATE-WHITE (SWITCH HOOK)
• TB2-9 ORANGE, BROWN (ALL SWITCH HOOK)
• TB2-10 ORANGE-WHITE, ORANGE-BLACK (BOTH KEYPAD)
• T82-11 ORANGE (SWITCH HOOK), BROWN (SWITCH HOOK)
• TB2-12 RED, SLATE, GREEN (ALL SWITCH HOOK)
• TB2-13 VIOLET (KEYPAD)
• TB2-14 (HANDSET RCVR, COLORS VARY)

• TB2-1 BLACK, GREEN (KEYPAD)
• TB2-2 (HANDSET MIC, COLORS VARY)
• TB2-3 YELLOW (SWITCH HOOK), ORANGE-WHITE (KEYPAD), ORANGE-BLACK (KEYPAD)
• TB2-4 WHITE (KEYPAD)
• TB2-5 (HANDSET MIC, COLORS VARY), RED (KEYPAD)
• TB2-6 RED-GREEN (KEYPAD)
• TB2-7 WHITE-BLUE (KEYPAD), (HANDSET RCVR, COLORS VARY)
• TB2-8 WHITE (SWITCH HOOK), SLATE-WHITE (SWITCH HOOK)
• TB2-9 RED, GREEN, SLATE, ORANGE, BROWN (ALL SWITCH HOOK)
• TB2-10 ORANGE-RED (KEYPAD)
• TB2-11 ORANGE (SWITCH HOOK), BROWN (SWITCH HOOK)
• TB2-12 NONE
• TB2-13 VIOLET (KEYPAD)
• TB2-14 (HANDSET RCVR, COLORS VARY)