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Installing and wiring telephones and trunks
Figure 50: Connections for telephone used for emergency transfer and as normal extension
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2820
3 | 4 |
ST
ST
EMXR
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5 | 6 | 7 | 8 |
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| C | N | N | N | C | N | C | N | G | |
TC | TK | LC | ST TC TK LC ST TC TK LC ST TC TK LC ST TC TK LC ST | O | O | O | ||||||||
O | C | C | O | C | R | |||||||||
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| M | 1 | 2 | 1 | M | 2 | M | 3 | D V | |
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XR | 1m | AL | 1M |
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ALARM MONITORS |
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Figure notes: |
| r758582b LAO 111104 |
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1. | To Network Interface Facility | 4. | To TN747B (or Equivalent) | |
2. | To Blue or White Station Distribution |
| Central Office Trunk Circuit Pack | |
| Field | 5. | To Power Transfer Unit | |
3. | To TN2183 or Equivalent Analog | 6. | DB9 Alarm Cable to TN2312BP | |
| Line Circuit Pack |
| Adapter | |
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Installing telephones used only for emergency transfer (trunk/auxiliary field)
To install telephones used only for emergency transfer:
1.Connect a pair of wires between the
2.Connect CO trunk leads from the purple field to TC terminals on the yellow emergency transfer row/connecting block for each trunk.
3.Connect CO trunk leads from the green field to TK terminals on the yellow emergency transfer row/connecting block for each trunk.