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DIRECT 2400PC

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.