U.S. ROBOTICS, INC.

SPORTSTER 28,800 INTERNAL

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

8-bit ISA

Fax Class

Class I & II.0

Data Modulation Protocol

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34

Rockwell V.FC

Fax Modulation Protocol

ITU-T V.17, V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Line out

CN1

Line in

CN2

COM PORT SETTINGS

COM

J1/1

J1/2

J1/3

J1/4

COM1

Closed

Open

Open

Open

» COM2

Open

Closed

Open

Open

COM3

Open

Open

Closed

Open

COM4

Open

Open

Open

Closed

INTERRUPT SELECT

Interrupt

J2/1

J2/2

J2/3

J2/4

J2/5

IRQ2

Closed

Open

Open

Open

Open

IRQ3

Open

Closed

Open

Open

Open

IRQ4

Open

Open

Closed

Open

Open

IRQ5

Open

Open

Open

Closed

Open

IRQ7

Open

Open

Open

Open

Closed

DTR SIGNAL

Setting

SW1/1

» DTR normal

Off

DTR forced high

On

RESULT CODES

Setting

SW1/2

» Verbal result codes enabled

Off

Numeric result codes enabled

On

RESULT CODES DISPLAY

Setting

SW1/3

» Enabled

On

Disabled

Off

ECHO DISPLAY

Setting

SW1/4

» Enabled

Off

Disabled

On

AUTO ANSWER

Setting

SW1/5

» Disabled

On

Enabled

Off

CARRIER DETECT

Setting

SW1/6

» CD normal

Off

CD forced high

On

SOFTWARE RESET

Setting

SW1/7

» CD normal

Off

CD forced high

On

AT COMMAND SET

Setting

SW1/8

Enabled

On

Disabled

Off

Proprietary AT Command Set

See document V1248 for a full command summary.