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MICROLINK 2400

U.S. ROBOTICS, INC.

MICROLINK 2400

Modem Type

Data (synchronous/asynchronous)

Maximum Data Rate

2400bps

Data Bus

8-bit ISA

Data Modulation Protocol

Bell 103A/212A

ITU-T V.22

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

Line in

CN2

DTR SIGNAL

Setting

SW1/1

DTR forced high

On

DTR normal

Off

RESULT CODES

Setting

SW1/2

Verbose codes enabled

Off

Numeric result codes enabled

On

RESULT CODES DISPLAY

Setting

SW1/3

Display disabled

Off

Display enabled

On

ECHO COMMANDS DISPLAY

Setting

SW1/4

Local echo enabled

Off

Local echo disabled

On

AUTO ANSWER

Setting

SW1/5

Modem doe not answer on first ring

On

Modem answers on first ring

Off

CARRIER DETECT

Setting

SW1/6

CD normal

Off

CD forced high

On

MULTI-LINE INSTALLATION

Setting

SW1/7

Single phone connected

Off

Multiple phones connected

On

AT COMMAND SET

Setting

SW1/8

AT command set enabled

On

AT command set disabled

Off

ESCAPE CODE

Setting

SW1/9

Go to command mode and display OK result code when escape character is received

On

Disconnect, go to command mode and display NO CARRIER when escape character is received

Off

VOLUME

Setting

SW1/10

High

Off

Low

On

BASE I/O ADDRESS SELECTION

Address

J3

J4

COM1: (3F8h)

Off

Pins 2 & 3 closed

COM2: (2F8h)

On

Pins 2 & 3 closed

COM3: (3E8h)

Off

Pins 1 & 2 closed

COM4: (2E8h)

On

Pins 1 & 2 closed

INTERRUPT

IRQ

J5

4

Pins 2 & 3 closed

3

Pins 1 & 2 closed

Proprietary AT Command Set

See document V1260 for a full command summary.