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AUTO LINK 212A

U.S. ROBOTICS, INC.

AUTO LINK 212A

Card Type

Modem (asynchronous)

Chip Set

U.S. Robotics

Maximum Data Rate

1200bps

Data Bus

External

Data Modulation Protocol

Bell 212A

V2253

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

Analog loopback switch

SW1

Line in

CN2

Originate mode switch

SW2

RS-232/422

CN3

Power switch

SW3

DC power

CN4

High speed

SW4

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Auto answer disabled

SW5/A

Off

Auto answer enabled

SW5/A

On

Local echo disabled

SW5/B

Off

Local echo enabled

SW5/B

On

Equalize for dial-up phone lines

SW5/C

Off

Equalize for dedicated phone lines

SW5/C

On

DTR normal

SW5/D

Off

DTR forced high

SW5/D

On

RS232C

Setting

SW6/A

SW6/B

SW6/C

SW6/D

Pin 2 receive/Pin 3 send

On

On

Off

Off

Pin 2 send/Pin 3 receive

Off

Off

On

On

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

ON

Red

On

Power is on

ON

Red

Off

Power is off

AL

Red

On

Modem is in analog loopback test mode

AL

Red

Off

Modem is not in analog loopback test mode

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

AN

Red

On

Auto-answer enabled

AN

Red

Off

Auto-answer disabled

HS

Red

On

Modem is operating at 1200bps

HS

Red

Off

Modem is operating at slower than 1200bps

MISCELLANEOUS TECHNICAL NOTES

Note: Diagram not available.