VIP Port Adapter Functions
Table 12 X.21 Adapter Cable Signals
DTE Cable |
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| DCE Cable |
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VIP End, HD1 |
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| Network End, |
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| Network End, | VIP End, HD |
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| 60Position Plug |
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| Receptacle |
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Signal | Pin |
| Pin | Signal | Signal | Pin |
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Shield ground | 46 |
| 1 | Shield ground | Shield ground | 46 |
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| 1 | Shield ground |
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TxD/RxD+ | 11 | 2 | Transmit+ | RxD/TxD+ | 11 | 2 | Transmit+ | |||
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TxD/RxD– | 12 | 9 | Transmit– | RxD/TxD– | 12 |
| 9 | Transmit– | ||
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RTS/CTS+ | 9 | 3 | Control+ | CTS/RTS+ | 9 | 3 | Control+ | |||
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RTS/CTS – | 10 | 10 | Control– | CTS/RTS – | 10 |
| 10 | Control– | ||
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RxD/TxD+ | 28 | <— | 4 | Receive+ | TxD/RxD+ | 28 | <— | 4 | Receive+ | |
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RxD/TxD– | 27 | <— | 11 | Receive– | TxD/RxD– | 27 |
| <— | 11 | Receive– |
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CTS/RTS+ | 1 | <— | 5 | Indication+ | RTS/CTS+ | 1 | <— | 5 | Indication+ | |
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CTS/RTS – | 2 | <— | 12 | Indication– | RTS/CTS– | 2 |
| <— | 12 | Indication– |
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RxC/TxCE+ | 26 | <— | 6 | Timing+ | TxC/RxC+ | 26 | <— | 6 | Timing+ | |
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RxC/TxCE– | 25 | <— | 13 | Timing– | TxC/RxC – | 25 |
| <— | 13 | Timing– |
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Circuit ground | 15 |
| 8 | Circuit ground | Circuit ground | 15 |
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| 8 | Circuit ground |
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Ground | 48 |
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| Shorting group | Ground | 48 |
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| Shorting |
Mode_2 | 47 |
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| Mode_2 | 47 |
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Ground | 51 |
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| Shorting group | Ground | 51 |
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Mode_DCE | 52 |
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| Mode_DCE | 52 |
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1. HD = high density.
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