3.14 Power Failure Connections
RJ11 Connector Pin Assignments for Analogue Trunk Card
PFT Ports 1 and 2
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| No. | Signal Name | Function |
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| 1 | 1 | R2 | Ring port 2 | |
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2 | R1 | Ring port 1 | ||||||||
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| 3 | T1 | Tip port 1 |
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| 4 | T2 | Tip port 2 |
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PFT Ports 3 and 4 (for LCOT16 card only) |
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| No. | Signal Name | Function |
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| 1 | 1 | R4 | Ring port 4 | |
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2 | R3 | Ring port 3 | ||||||||
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| 3 | T3 | Tip port 3 |
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| 4 | T4 | Tip port 4 |
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RJ11 Connector Pin Assignments for Extension Card
PFT Ports 1 and 2
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| No. | Signal Name | Function |
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| 1 | 1 | T2 | Tip port 2 | |
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2 | T1 | Tip port 1 | ||||||||
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| 3 | R1 | Ring port 1 |
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| 4 | R2 | Ring port 2 |
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PFT Ports 3 and 4 (for MSLC16/SLC16 card only)
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| No. | Signal Name | Function |
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| 1 | 1 | T4 | Tip port 4 | |
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2 | T3 | Tip port 3 | ||||||||
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| 3 | R3 | Ring port 3 |
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| 4 | R4 | Ring port 4 |
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