MODULAR SMART SWITCH
IBM AT end | Modular Smart Switch end | |
2 | TXD | |
2 | ||
3 | RXD | |
3 | ||
5 | GND | |
7 | ||
6 | DTR | |
8 | ||
20 | ||
| CTS | |
| 5 | |
| 4 |
Figure A-2. IBM AT Serial Cable Pinning.
A.3 Connecting to Printers
Most serial printers provide a standard DB25 connector for serial data. The required cable wiring is shown in Figure
Modular Smart Switch end | Printer end |
TXD | 3 |
2 | |
RXD | 2 |
3 | |
CTS | 20 |
5 | |
6 | 5 |
DTR | 6 |
20 | |
GND | 7 |
7 |
Figure A-3. Cable Pinout for Serial Printers.
MODULAR SMART SWITCH
A.4 Connecting to Modems
The cable shown in Figure
Modular Smart Switch end | Modem |
Printer end | |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 4 |
5 | 5 |
7 | 7 |
20 | 20 |
Figure A-4. Cable Pinout for Modems.
56 |
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| 57 |
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