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Section
Table 4-20. Pinouts and color codes for extension connector CN12
Extension Slot | Color Code | Pin No. | Desig. | Function |
EC1 | 26 | 1T | Extension Port 1 | |
(DBS 40, | 1 | 1R |
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DBS 72, | 27 | 2T | Extension Port 2 | |
DBS 96) | 2 | 2R |
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| 28 | 3T | Extension Port 3 | |
| 3 | 3R |
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| 29 | 4T | Extension Port 4 | |
| 4 | 4R |
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| 30 | 5T | Extension Port 5 | |
| 5 | 5R |
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| 31 | 6T | Extension Port 6 | |
| 6 | 6R |
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| 32 | 7T | Extension Port 7 | |
| 7 | 7R |
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| 33 | 8T | Extension Port 8 | |
| 8 | 8R |
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EC2 | 34 | 9T | Extension Port 9 | |
(DBS 40, | 9 | 9R |
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DBS 72, | 35 | 10T | Extension Port 10 | |
DBS 96) | 10 | 10R |
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| 36 | 11T | Extension Port 11 | |
| 11 | 11R |
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| 37 | 12T | Extension Port 12 | |
| 12 | 12R |
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| 38 | 13T | Extension Port 13 | |
| 13 | 13R |
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| 39 | 14T | Extension Port 14 | |
| 14 | 14R |
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| 40 | 15T | Extension Port 15 | |
| 15 | 15R |
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| 41 | 16T | Extension Port 16 | |
| 16 | 16R |
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EC3 | 42 | 17T | Extension Port 17 | |
(DBS 40, | 17 | 17R |
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DBS 72, | 43 | 18T | Extension Port 18 | |
DBS 96) | 18 | 18R |
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| 44 | 19T | Extension Port 19 | |
| 19 | 19R |
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| 45 | 20T | Extension Port 20 | |
| 20 | 20R |
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| 46 | 21T | Extension Port 21 | |
| 21 | 21R |
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| 47 | 22T | Extension Port 22 | |
| 22 | 22R |
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| 48 | 23T | Extension Port 23 | |
| 23 | 23R |
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| 49 | 24T | Extension Port 24 | |
| 24 | 24R |
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| 50 | Not used |
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| 25 |
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Note: Only digital extensions can be used in slot EC1. Port 1 is reserved for Attendant 1 and requires a Display Key Phone.
DBS Manual - Revised April 2000 |