Specifications
73
TELCO Connectors
Model 2100 Backplane TELCO Pinouts (702-9133 Rev C - J13)
1 
“-” means no connection. 
2 
“Radio” means that the signal is used by radio cards in slots 9 & 10. 
3 
The signal names ending in “A” are used by the single trunk card 702-9037. The dual trunk card 
702-9117 uses signals ending in “A” for trunk A and signals ending in “B” for trunk B. The single 
trunk card 702-9037 has no connections to any signals ending in “B”. For example, Signal “RING 
10A” is a telco Ring signal from a trunk card plugged into slot number 10. If that card is a dual 
trunk, the Ring signal is for trunk A on the dual trunk. 
4 
Connector J13 can serve trunk cards plugged into slots 6 through 10. With one radio card in slot 
#10, this means four telco lines in slots 6 through 9 with single trunk 702-9037s or eight telco lines 
if with dual trunk 702-9117s. 
5 
The table shows the pins in numeric order, as they appear when looking directly at the connector. 
When looking at them on a punch-down block, you need to flip the left and right halves of the table, 
as the first pin on a punch-down block is pin 26, the second pin is 1, etc. Refer to the punch-down 
block diagram on page 129.
J13
Pin
Card
Slot
Signal Name
Wire Color
Main/Stripe
J13
Pin
Card
Slot
Signal Name
Wire Color
Main/Stripe
1 6 RING 6A Blue/White 26 6 TIP 6A White/Blue
2 6 M 6A Orange/White 27 6 E 6A White/Orange
3 6 RING 6B Green/White 28 6 TIP 6B White/Green
4 6 M 6B Brown/White 29 6 E 6B White/Brown
5 7 RING 7A Slate/White 30 7 TIP 7A White/Slate
6 7 M 7A Blue/Red 31 7 E 7A Red/Blue
7 7 RING 7B Orange/Red 32 7 TIP 7B Red/Orange
8 7 M 7B Green/Red 33 7 E 7B Red/Green
9 8 RING 8A Brown/Red 34 8 TIP 8A Red/Brown
10 8 M 8A Slate/Red 35 8 E 8A Red/Slate
11 8 RING 8B Blue/Black 36 8 TIP 8B Black/Blue
12 8 M 8B Orange/Black 37 8 E 8B Black/Orange
13 9 RING 9A Green/Black 38 9 TIP 9A Black/Green
14 9 M 9A Brown/Black 39 9 E 9A Black/Brown
15 9 RING 9B Slate/Black 40 9 TIP 9B Black/Slate
16 9 M 9B Blue/Yellow 41 9 E 9B Yellow/Blue
17 10 RING 10A Orange/Yellow 42 10 TIP 10A Yellow/Orange
18 10 M 10A Green/Yellow 43 10 E 10A Yellow/Green
19 10 RING 10B Brown/Yellow 44 10 TIP 10B Yellow/Brown
20 10 M 10B Slate/Yellow 45 10 E 10B Yellow/Slate
21 9 Radio Blue/Violet 46 9 Radio Violet/Blue
22 9 Radio Orange/Violet 47 9 Radio Violet/Orange
23 10 Radio Green/Violet 48 10 Radio Violet/Green
24 10 Radio Brown/Violet 49 10 Radio Violet/Brown
25 Chassis GND Slate/Violet 50 Chassis GND Violet/Slate










