Specifications

Trunk Cards and Connections
76 025-9035AA
Model 2200 Main and Expansion Chassis Backplane Pinouts (702-9071 Rev E -
J23)
1
“-” means no connection.
2
This connector is used only for 4-wire audio E&M configurations, and requires corresponding
options on trunk cards.
3
These are the transmit (outgoing) audio pairs.
4
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.
J23
Pin
Card
Slot
Signal Name
Wire Color
Main/Stripe
J23
Pin
Card
Slot
Signal Name
Wire Color
Main/Stripe
1 7 RING 7A Blue/White 26 7 TIP 7A White/Blue
2 7 RING 7B Orange/White 27 7 TIP 7B White/Orange
3 8 RING 8A Green/White 28 8 TIP 8A White/Green
4 8 RING 8B Brown/White 29 8 TIP 8B White/Brown
5 9 RING 9A Slate/White 30 9 TIP 9A White/Slate
6 9 RING 9B Blue/Red 31 9 TIP 9B Red/Blue
7 10 RING 10A Orange/Red 32 10 TIP 10A Red/Orange
8 10 RING 10B Green/Red 33 10 TIP 10B Red/Green
9 11 RING 11A Brown/Red 34 11 TIP 11A Red/Brown
10 11 RING 11B Slate/Red 35 11 TIP 11B Red/Slate
11 12 RING 12A Blue/Black 36 12 TIP 12A Black/Blue
12 12 RING 12B Orange/Black 37 12 TIP 12B Black/Orange
13 13 RING 13A Green/Black 38 13 TIP 13A Black/Green
14 13 RING 13B Brown/Black 39 13 TIP 13B Black/Brown
15 14 RING 14A Slate/Black 40 14 TIP 14A Black/Slate
16 14 RING 14B Blue/Yellow 41 14 TIP 14B Yellow/Blue
17 15 RING 15A Orange/Yellow 42 15 TIP 15A Yellow/Orange
18 15 RING 15B Green/Yellow 43 15 TIP 15B Yellow/Green
19 16 RING 16A Brown/Yellow 44 16 TIP 16A Yellow/Brown
20 16 RING 16B Slate/Yellow 45 16 TIP 16B Yellow/Slate
21 — — Blue/Violet 46 — — Violet/Blue
22 — — Orange/Violet 47 — — Violet/Orange
23 — — Green/Violet 48 — — Violet/Green
24 — — Brown/Violet 49 — — Violet/Brown
25 Chassis GND Slate /Violet 50 Chassis GND Violet/Slate