3COM CORPORATION

US ROBOTICS 33.6KBPS (EXTERNAL)

Card Type

Modem

Chip Set

Unidentified

I/O Options

Line out, line in

Maximum Modem Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103A/212A, ITU-T V.21, V.22, V.22bis,V.32, V.32bis, V.34, V.FC

Fax Modulation Protocol

V.17, V.21, CH2, V.27ter, V.29

Error Correction/Compression

MNP2-4, V.42

Fax Class

Class I & II

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

RJ-11 line in

CN1

25-pin serial port

CN3

RJ-11 line out

CN2

Power Jack

CN4

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

AA

Unidentified

On

Auto-answer enabled

AA

Unidentified

Off

Auto-answer disabled

AA

Unidentified

Blinking

Phone is ringing

CD

Unidentified

On

Carrier signal detected, connection established

CD

Unidentified

Off

Carrier signal not detected

RD

Unidentified

Blinking

Modem is receiving data

RD

Unidentified

Off

Modem is not receiving data

TR

Unidentified

Blinking

Modem is receiving DTR signal/DTR override is on

TR

Unidentified

Off

Modem is not receiving DTR signal

CS

Unidentified

On

CTS signal is high

CS

Unidentified

Off

CTS signal is low

ARQ/FAX

Unidentified

On

Modem established error control

ARQ/FAX

Unidentified

Blinking

Modem retransmitting data/Fax mode enabled

ARQ/FAX

Unidentified

Off

Modem has not established error control

 

SUPPORTED COMMAND SET

Basic AT Commands

AT, A/, +++

A, B, E, F, H, M, O, P, T, V

&C, &G, &T, &W

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S38

 

Special Commands

#CID

 

Note: See MHI Help File for full command documentation.

For a full command summary, see 3COM CORPORATION, US ROBOTICS 33.6KBPS (INTERNAL).