Cables and Connectors
Cable and Connector
RS-449/422 WAN Cable—Minimum Pin-Outs
WAN link | Router end | ||||||||
end | and Circuit | ||||||||
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| 17 | SD | Send Data, A |
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5 |
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| 2 | ST | Send Timing, A |
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6 |
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| 1 | RD | Receive Data, A |
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| 15 | RS | Request to Send, A |
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8 |
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| 3 | RT | Receive Timing, A |
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| 4 | CS | Clear to Send, A |
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10 |
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11 |
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| 5 | DM | Data Mode, A |
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12 |
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| 16 | TR | Terminal Ready, A |
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13 |
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| 6 | RR | Receiver Ready, A |
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14 |
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| 53 |
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15 |
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| 48 |
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16 |
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| 55 |
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17 |
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| 14 | TT | Terminal Timing, A |
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18 |
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| 8 |
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19 |
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| 9 | SG | Signal Ground |
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| 30 |
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| 32 |
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20 |
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| 47 |
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22 |
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| 38 | SD | Send Data, B |
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23 |
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| 23 | ST | Send Timing, B |
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24 |
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| 22 | RD | Receive Data, B |
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25 |
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| 36 | RS | Request to Send, B |
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26 |
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| 24 | RT | Receive Timing, B |
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27 |
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| 25 | CS | Clear to Send, B |
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28 |
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| 33 |
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29 |
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| 26 | DM | Data Mode, B |
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30 |
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| 37 | TR | Terminal Ready, B |
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31 |
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| 27 | RR | Receiver Ready, B |
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33 |
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| 29 |
| Reserved |
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34 |
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| 34 |
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35 |
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| 35 | TT | Terminal Timing, B |
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37 |
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| 10 | SC | Send Common |
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and Cables Connectors A