COURIER HIGH SPEED MODEMS
NOTE: If you have built your own RS-232 cable and it does not support the Data Terminal Ready (DTR) signal, set DIP switch 1 ON, for DTR override. The override causes the modem to operate as if the DTR signal were always ON, and enables the modem to accept commands. Most purchased communications software, however, requires “normal” DTR.
8.The final step is to connect the modem to the computer's or terminal's serial port with the RS-232 cable. Attach the appropriate connectors to the modem and to the serial port.
ON/OFF | POWER | PHONE JACKS | SERIAL PORT INTERFACE |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
To computer
To wall outlet
To wall jack
To phone
Figure 2.3—Cabled Courier Modem
External Modem Set Up 2-5
