3COM CORPORATION

AUTO DIAL S-100

Card Type

Modem (asynchronous)

Chip Set

U.S. Robotics

Maximum Data Rate

1200bps

Data Bus

External

Data Modulation Protocol

Bell 103/212A

54168

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

DC power

CN4

Line in

CN2

Power switch

SW1

RS-232/422

CN3

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Factory configured

J1

Unidentified

10-bit character transmission

J2

Unidentified

11-bit character transmission

J2

Unidentified

Equalize for dial-up phone lines

J5

Unidentified

Equalize for dedicated phone lines

J5

Unidentified

ADDRESS SELECTION

Setting

S6/A

S6/B

S6/C

S6/D

J6

00/01

Off

Off

Off

Off

Off

0E/0F

Off

Off

Off

Off

On

10/11

Off

Off

Off

On

Off

1E/1F

Off

Off

Off

On

On

20/21

Off

Off

On

Off

Off

2E/2F

Off

Off

On

Off

On

30/31

Off

Off

On

On

Off

3E/3F

Off

Off

On

On

On

40/41

Off

On

Off

Off

Off

4E/4F

Off

On

Off

Off

On

50/51

Off

On

Off

On

Off

5E/5F

Off

On

Off

On

On

60/61

Off

On

On

Off

Off

6E/6F

Off

On

On

Off

On

70/71

Off

On

On

On

Off

7E/7F

Off

On

On

On

On

80/81

On

Off

Off

Off

Off

8E/8F

On

Off

Off

Off

On

90/91

On

Off

Off

On

Off

9E/9F

On

Off

Off

On

On

A0/A1

On

Off

On

Off

Off

AE/AF

On

Off

On

Off

On

B0/B1

On

Off

On

On

Off

BE/BF

On

Off

On

On

On

C0/C1

On

On

Off

Off

Off

CE/CF

On

On

Off

Off

On

D0/D1

On

On

Off

On

Off

DE/DF

On

On

Off

On

On

E0/E1

On

On

On

Off

Off

EE/EF

On

On

On

Off

On

F0/F1

On

On

On

On

Off

FE/FF

On

On

On

On

On

Note: J6 ‘Off’ position in table corresponds to ‘Up’ position on board. J6 ‘On’ position corresponds to ‘Down’ position.

MISCELLANEOUS TECHNICAL NOTES

Note: Diagram not available.

Proprietary AT Command Set

See document V2252 for a full command summary.