E1 Pinout » History » Version 4
manawyrm, 02/23/2022 01:45 PM
Added pinout info for icE1usb
1 | 1 | laforge | h1. E1 Pinout |
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3 | This page tries to summarize various E1 line pin-outs. |
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5 | 4 | manawyrm | |_.Name|_.RJ45 Digium|_.RJ45 Auerswald|_.Livingston PM3|_.icE1usb (TE, default)|_.icE1usb (NT)| |
6 | |RxN (ring)|1|1|1|1|4| |
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7 | |RxP (tip)|2|2|2|2|5| |
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8 | |TxN (ring)|4|4|4|4|1| |
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9 | |TxP (tip)|5|5|5|5|2| |
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10 | |UB-|-|7|-|-|-| |
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11 | |UB+|-|8|-|-|-| |
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13 | 1 | laforge | |
14 | 3 | laforge | *When connecting two E1 ports with another, the Rx pair always needs to be crossed over to the Tx pair of the other side. There is no feature like Auto-MDI-X in Ethernet!* |
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16 | h2. E1 cross-over |
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17 | 1 | laforge | |
18 | See https://support.digium.com/community/s/article/How-do-I-make-a-T1-E1-Crossover-cable |
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20 | A T1/E1 crossover cable has pin 1 routed to pin 4 and pin 2 routed to pin 5. |
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23 | Pin 1 will be the far left pin when holding the plug with the lock-tab facing away from you. Pin 8 will then be the far right pin. |
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26 | 1 <-> 4 |
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27 | 2 <-> 5 |
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29 | The other pairs of the cable should all be routed straight through (the T568A standard may be used as an example for this). |
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32 | This is not compatible with an Ethernet cross-over cable which swaps 1<->3 and 2<-> 6 (and optionally 4 <->7 and 5 <-> 8). |