Chapter 1 Overview
Cables, Connectors, and Pinouts
Table 1-4 EIA/TIA-449 Adapter Cable Signals
DTE Cable |
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VIP End, HD1 |
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| Network End, | VIP End, HD |
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| Network End, |
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Signal | Pin |
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| Pin | Signal | Signal | Pin |
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Shield ground | 46 |
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| 1 | Shield ground | Shield ground | 46 |
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| 1 | Shield ground |
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TxD/RxD+ | 11 | 4 |
| SD+ | RxD/TxD+ | 28 | <— | 4 | SD+ | ||
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TxD/RxD– | 12 |
| 22 | SD– | RxD/TxD– | 27 | <— | 22 | SD– | ||
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TxC/RxC+ | 24 | <— | 5 |
| ST+ | TxCE/TxC+ | 13 | 5 | ST+ | ||
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TxC/RxC– | 23 | <— |
| 23 | ST– | TxCE/TxC– | 14 | 23 | ST– | ||
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RxD/TxD+ | 28 | <— | 6 |
| RD+ | TxD/RxD+ | 11 | 6 | RD+ | ||
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RxD/TxD– | 27 | <— |
| 24 | RD– | TxD/RxD– | 12 | 24 | RD– | ||
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RTS/CTS+ | 9 | 7 |
| RS+ | CTS/RTS+ | 1 | <— | 7 | RS+ | ||
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RTS/CTS– | 10 |
| 25 | RS– | CTS/RTS– | 2 |
| <— | 25 | RS– | |
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RxC/TxCE+ | 26 | <— | 8 |
| RT+ | TxC/RxC+ | 24 | 8 | RT+ | ||
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RxC/TxCE– | 25 | <— |
| 26 | RT– | TxC/RxC– | 23 | 26 | RT– | ||
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CTS/RTS+ | 1 | <— | 9 |
| CS+ | RTS/CTS+ | 9 | 9 | CS+ | ||
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CTS/RTS– | 2 | <— |
| 27 | CS– | RTS/CTS– | 10 | 27 | CS– | ||
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LL/DCD | 44 | 10 | LL | NIL/LL | 29 | 10 | LL |
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Circuit ground | 45 |
| 37 | SC | Circuit ground | 30 |
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DSR/DTR+ | 3 | <— | 11 | ON+ | DTR/DSR+ | 7 | 11 | ON+ | |||
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DSR/DTR– | 4 | <— | 29 | ON– | DTR/DSR– | 8 |
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DTR/DSR+ | 7 | 12 | TR+ | DSR/DTR+ | 3 | <— | 12 | TR+ | |||
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DTR/DSR– | 8 | 30 | TR– | DSR/DTR– | 4 |
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DCD/DCD+ | 5 | <— | 13 | RR+ | DCD/DCD+ | 5 | 13 | RR+ | |||
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DCD/DCD– | 6 | <— | 31 | RR– | DCD/DCD– | 6 |
| 31 | RR– | ||
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TxCE/TxC+ | 13 | 17 | TT+ | RxC/TxCE+ | 26 | <— | 17 | TT+ | |||
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TxCE/TxC– | 14 | 35 | TT– | RxC/TxCE– | 25 | <— | 35 | TT– | |||
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Circuit ground | 15 |
| 19 | SG | Circuit ground | 15 |
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Circuit ground | 16 |
| 20 | RC | Circuit ground | 16 |
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| 20 | RC | |
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Mode 1 | 49 |
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| Shorting group | Mode 1 | 49 |
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| Shorting group |
Ground | 48 |
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| Ground | 48 |
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Ground | 51 |
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| Shorting group |
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Mode_DCE | 52 |
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1. HD = high density.
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