3COM CORPORATION

US ROBOTICS COURIER V.EVERYTHING PC CARD MODEM

Card Type

Modem (synchronous/asynchronous)

Chip Set

Unidentified

Maximum Modem Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103/212A

ITU-T V.34, V.Fast class, V.32terbo, HST, V.32bis, V.32, V.22bis, V.23

Fax Modulation Protocol

TIA/EIA-578, TIA/EIA-592, V.17, V.29, V.27ter, V.21

Error Correction/Compression

V.42, MNP5, HST, V.42bis, V.54

Fax Class

Class I & II

Data Bus

PCMCIA Type II

54920

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

Power

Unidentified

On

Power is on

Power

Unidentified

Off

Power is off

Send

Unidentified

On

Modem is transmitting data

Send

Unidentified

Off

Modem is not transmitting data

Receive

Unidentified

On

Modem is receiving data

Receive

Unidentified

Off

Modem is not receiving data

On-line

Unidentified

On

Modem connected

On-line

Unidentified

Off

Modem not connected

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, B, C, E, F, H, M, O, V

&C, &G, &L, &W, &X, &Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S26

Note: See MHI Help File for full command documentation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Proprietary AT Command Set

ADDITIONASL RESULT CODES

Type:

Configuration

Format:

AT [cmds] &An [cmds]

Description:

Controls the display of the additional result codes

Command

Function

í &A0

Do not display ARQ result codes

&A1

Display ARQ result codes

&A2

Display ARQ result codes, HST, V.32, V.FC or V.34 modulation indicator

&A3

Display ARQ result codes and error control indicator LAPM, HST, MNP, SYNC, or NONE

BREAK HANDLING

Type:

Configuration

Format:

AT [cmds] &Yn [cmds]

Description:

Controls the break handling

Command

Function

í &Y0

Destructive, don’t send break

&Y1

Destructive, expedited break sent

&Y2

Nondestructive, expedited break sent

&Y3

Nondestructive un-expedited break sent

CONNECTION RATE

Type:

Configuration

Format:

AT [cmds] &Nn [cmds]

Description:

Controls the connection rate

Command

Function

í &N0

Variable rate

&N1

300bps

&N2

1200bps

&N3

2400bps

&N4

4800bps

&N5

7200bps

&N6

9600bps

&N7

12Kbps

&N8

14.4Kbps

&N9

16.8Kbps

&N10

19.2Kbps

&N11

21.6Kbps

&N12

24Kbps

&N13

26.4Kbps

&N14

28.8Kbps

DATA COMPRESSION

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Controls the data compression

Command

Function

&K0

Data compression disabled

í &K1

Use auto enable/disable data compression

&K2

Data compression always enabled

&K3

Selective data compression

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

í &S1

DSR high only while modem is handshaking or connected

&S2

On loss of carrier, modem sends a pulse DSR signal with CTS following CD

&S3

On loss of carrier, modem sends a pulse DSR signal

&S4

Modem sends DSR signal at the same time it sends CD signal

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Note: The action each variant of &D causes depends on the setting of &Q

Command

Function

í &D0

Modem does not respond to DTR

&D1

Modem goes to command mode after DTR goes is off

&D2

Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials telephone number according to any modifiers included in the string

Note:

Any combination of modifiers can be used to produce the desired dial functions in sequence.

Command

Function

DP

Pulse dialing enabled

DR

Answer mode enabled; originate mode disabled following handshake initiation.

DS=n

Dial stored telephone number n

DT

Tone dialing enabled/Pulse dialing disabled

D@

Wait for an answer

DW

Dialing resumed following dial tone detection

D,

Dialing paused for amount of time specified in S8 register

D"WXY"

Optional method of denoting telephone numbers. Letters enclosed in quotes are interpreted as numbers according to the system found on a telephone keypad.

D!

Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.

D;

Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

D/

Pause for 125 milliseconds

ERROR CONTROL

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects the error control protocol

Command

Mode

í &M0

Normal mode, no error control

&M1

Synchronous mode, without V.25bis

&M2

Reserved

&M3

Reserved

&M4

Normal/ARQ mode,

&M5

ARQ asynchronous mode

&M6

V.25bis synchronous mode.

&M7

V.25bis synchronous mode, using HDLC link protocol

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

Command

Function

í &F0

Load No Flow Control template settings

&F1

Load Hardware Flow Control template settings

&F2

Load Software Flow Control template settings

&F3

Load HST cellular template settings

HELP

Type:

Configuration

Format:

AT [cmds] #$ [cmds]

Description:

Display the help pannels for the octothorpe (#) command set

MODEM CLOCK

Type:

Configuration

Format:

AT [cmds] Kn [cmds]

Description:

Controls the modem clock

Command

Function

í K0

If on-line, display current call duration; if off-line, display the last call’s duration

K1

Display the actual time (set clock using ATI3=HH:MM:SS K1)

PHONE LINE SELECTION

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects normal/leased/cellular line

Command

Function

&L0

Switched line (PSTN/Dial-up)

í &L1

Leased line

&L2

HST cellular line

PULSE DIALING RATIO

Type:

Configuration

Format:

AT [cmds] &Pn [cmds]

Description:

Selects pulse dial make/break ratio

Command

Function

í &P0

39/61ms at 10pps (North America)

&P1

33/67ms at 10pps (Europe)

RECEIVE DATA FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &In [cmds]

Description:

Controls the receive data flow control

Command

Jack Type

í &I0

Disables XON/XOFF flow control

&I1

Modem acts on typed XON/XOFF commands, Ctrl -S, or Ctrl -Q and passes them to remote device

&I2

Modem acts on typed XON/XOFF commands but removes them from data stream

&I3

Hewlett Packard host mode

&I4

Hewlett Packard terminal mode

&I5

Enable flow control on the phone link when the connection is not under error control

REPEAT LAST COMMAND

Type:

Immediate

Format:

AT [cmds] A> [cmds]

Description:

Repeat last command until canceled by pressing any key.

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product code

I1

Reports results of ROM checksum

I2

Reports results of RAM test

I3

Reports the duration of the last call

I4

Reports the current modem settings

I5

Reports the settings stored in NVRAM

I6

Reports statistics for the last call

I7

Reports product configuration

I8

Reserved

I9

Reserved

I10

Reports dial security account status information

I11

Reserved

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

í Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

Suppress result codes when answering

RTS/CTS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Selects RTS/CTS options

Command

Function

í &R0

CTS follows RTS in data mode; RTS is ignored in command mode.

&R1

CTS forced high, RTS is ignored.

&R2

Enable hardware flow control of received data

SELECT CALL PROGRESS RESULT CODES

Type:

Configuration

Format:

AT [cmds] Xn [cmds]

Description:

Enables selection of tone detection and associated result code format options

Command

Function

X0

Busy and dial tone detection disabled; result codes 0 - 4 enabled.

X1

Busy and dial tone detection disabled; result codes 0 - 5 & 10 enabled.

X2

Busy tone detection disabled, dial tone detection enabled; result codes 0 - 6 & 10 enabled.

X3

Busy tone detection enabled, dial tone detection disabled; result codes 0 - 5, 7 & 10 enabled.

í X4

Busy and dial tone detection enabled; result codes 0 - 7 & 10 enabled.

X5

Busy tone detection disabled, dial tone detection disabled, all result codes enabled

X6

All result codes enabled

X7

Voice detection disable, all result codes enabled

SERIAL PORT RATE

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Controls the serial port rate

Command

Function

í &B0

Variable serial port rate

&B1

Fixed serial port rate

&B2

In answer mode use fixed rate for ARQ calls and variable rate for non ARQ calls.

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L0

Low volume setting

L1

Low volume setting

í L2

Medium volume setting

L3

Highest volume setting

TEST MODES

Type:

Immediate

Format:

AT [cmds] &Tn

Description:

Selects test options

Command

Function

&T0

End current test

&T1

Begin local analog loopback test

&T3

Begin local digital loopback

&T4

Grant remote digital loopback request

&T5

Deny remote digital loopback request

&T6

Begin remote digital loopback

&T7

Begin remote digital loopback and self-test

&T8

Begin analog loopback with self test and error detection

TRANSMIT DATA FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Hn [cmds]

Description:

Controls the transmit data flow

Command

Function

í &H0

Flow control disabled

&H1

Hardware flow control enable

&H2

Software flow control enable

&H3

Both hardware and software flow control enabled

WRITE TO TEMPLATE

Type:

Configuration

Format:

AT [cmds] &Wn [cmds]

Description:

Writes to desired template

Command

Function

í &W0

Write to NVRAM template 0

&W1

Write to NVRAM template 1

Extended AT Commands

 

ASSIGN PASSWORD

Type:

Immediate

Format:

AT [cmds] %V=PWn [cmds]

Description:

Assign the password in account n in security account

CLOCK SPEED

Type:

Immediate

Format:

AT [cmds] %N [cmds]

Description:

Sets the V.25bis clock speed

Command

Function

%N0

Reserved

%N1

Reserved

%N2

1200bps

%N3

2400bps

%N4

4800bps

%N5

7200bps

%N6

9600bps

%N7

12Kbps

%N8

14.4Kbps

%N9

16.8Kbps

%N10

19.2Kbps

ERASE SECURITY SETTINGS

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Erases selected security settings

Command

Function

%E1

Erase local access password

%E2

Erase autopass password

%E3

Erase passwords in accounts 0-9

%E4

Erase phone numbers in accounts 0-9

%E5

Disable account, dialback, and new number fields in accouns 0-9

LOCAL ACCESS PASSWORD

Type:

Configuration

Format:

AT [cmds] %Ln [cmds]

Description:

Set local access password

PASSWORD SECURITY

Type:

Immediate

Format:

AT [cmds] %P [cmds]

Description:

Disable password security

REMOTE CONFIGURATION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Controls the remote configuration

Command

Function

%C0

Defer configuration changes until the call is ended

%C1

Cancel configuration changes and restore the original configuration

%C2

Force configuration changes to take effect immediately

REMOTE CONFIGURATION

Type:

Configuration

Format:

AT [cmds] %Fn [cmds]

Description:

Configure another device’s data remotely

Command

Function

%F0

No parity, 8 data bits

%F1

Mark parity, 7 data bits

%F2

Odd parity, 7 data bits

%F3

Even parity, 7 data bits

SECURITY ACCOUNTS

Type:

Configuration

Format:

AT [cmds] %An [cmds]

Description:

Create and configure security accounts

SECURITY ACCOUNTS

Type:

Configuration

Format:

AT [cmds] %Sn [cmds]

Description:

Access security accounts

SERIAL PORT RATE

Type:

Configuration

Format:

AT [cmds] %Bn [cmds]

Description:

Remotely configure a modem’s serial port rate

Command

Function

%B0

110bps

%B1

300bps

%B2

600bps

%B3

1200bps

%B4

2400bps

%B5

4800bps

%B6

9600bps

%B7

19200bps

%B8

38400bps

%B9

57600bps

%B10

115200bps

TONE FREQUENCIES

Type:

Configuration

Format:

AT [cmds] %Tn [cmds]

Description:

Enalbes recognition of the tone frequencies