U.S. ROBOTICS, INC.
DIRECT 2400PC
Modem Type |
Data (synchronous/asynchronous) |
Maximum Data Rate |
2400bps |
Data Bus |
8-bit ISA |
Data Modulation Protocol |
Unidentified |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Line out |
CN1 |
Volume |
SW2 |
Line in |
CN2 |
DTR SIGNAL | |
Setting |
SW1/1 |
» On |
DTR forced high |
Off |
DTR normal |
RESULT CODES | |
Setting |
SW1/2 |
» Off |
Verbose result codes enabled |
On |
Numeric result codes enabled |
RESULT CODES DISPLAY | |
Setting |
SW1/3 |
» On |
Display enabled |
Off |
Display disabled |
ECHO COMMANDS DISPLAY | |
Setting |
SW1/4 |
» Off |
Local echo enabled |
On |
Local echo disabled |
AUTO ANSWER | |
Setting |
SW1/5 |
» On |
Modem does not answer on first ring |
Off |
Modem answers on first ring |
CARRIER DETECT | |
Setting |
SW1/6 |
» Off |
CD normal |
On |
CD forced high |
MULTI-LINE INSTALLATION | |
Setting |
SW1/7 |
» Off |
Single phone connected |
On |
Multiple phones connected |
AT COMMAND SET | |
Setting |
SW1/8 |
» On |
AT command set enabled |
Off |
AT command set disabled |
ESCAPE CODE | |
Setting |
SW1/9 |
» On |
Go to command mode and display OK result code when escape character is received |
Off |
Disconnect, go to command mode and display NO CARRIER when escape character is received |
FACORY CONFIGURED SETTINGS | |
Switch |
Setting |
SW1/10 |
Off |
BASE I/O ADDRESS SELECTION | ||
Address |
J1 |
J2 |
COM1: (3F8h) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
COM2: (2F8h) |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
COM3: (3E8h) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
COM4: (2E8h) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
INTERRUPT | |
IRQ |
J5 |
3 |
Pins 3 & 5 closed |
4 |
Pins 1 & 3 closed |
5 |
Pins 2 & 4 closed |
7 |
Pins 4 & 7 closed |
Proprietary AT Command Set
See document V1255 for a full command summary.