3COM CORPORATION
COURIER V.32
|
Card Type |
Modem (synchronous/asynchronous) |
|
Chip Set |
Unidentified |
|
Maximum Data Rate |
9600bps |
|
Data Bus |
External |
|
Data Modulation Protocol |
Bell 103/212A ITU-T V.21, V.22, V.22bis, V.32 |
|
Error Correction/Compression |
MNP5 |
|
CONNECTIONS | ||||||
|
Function |
Label |
Function |
Label | |||
|
Power switch |
SW1 |
Line out |
CN3 | |||
|
DC power |
CN1 |
RS-232/422 |
CN4 | |||
|
Line in |
CN2 | |||||
|
USER CONFIGURABLE SETTINGS | ||
|
Setting |
Label |
Position |
|
í DTR forced high |
SW2/1 |
On |
|
DTR normal |
SW2/1 |
Off |
|
í Verbose result codes |
SW2/2 |
Off |
|
Numeric result codes |
SW2/2 |
On |
|
í Result code display enabled |
SW2/3 |
On |
|
Result code display disabled |
SW2/3 |
Off |
|
í Local echo enabled |
SW2/4 |
Off |
|
Local echo disabled |
SW2/4 |
On |
|
í Auto answer disabled |
SW2/5 |
On |
|
Auto answer enabled |
SW2/5 |
Off |
|
í CD signal normal |
SW2/6 |
Off |
|
CD forced high |
SW2/6 |
On |
|
í Result codes displayed during originate and answer modes |
SW2/7 |
Off |
|
Result codes not displayed during answer mode when SW1/3 is On |
SW2/7 |
On |
|
í Smart mode |
SW2/8 |
On |
|
Dumb mode |
SW2/8 |
Off |
|
í Modem goes on-hook, command mode enabled, OK reported |
SW2/9 |
On |
|
Modem remains off-hook, command mode enabled, NO CARRIER reported |
SW2/9 |
Off |
|
í Load configuration from NVRAM |
SW2/10 |
Off |
|
Load configuration from ROM |
SW2/10 |
On |
|
DTE/DCE MODE SELECTION | ||||
|
Setting |
SW3/1 |
SW3/2 |
SW3/3 |
SW3/4 |
|
DCE mode |
Off |
Off |
Off |
Off |
|
DTE mode |
On |
On |
On |
On |
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
HS |
Red |
On |
Modem is operating at 2400bps or faster |
|
HS |
Red |
Off |
Modem is operating at slower than 2400bps |
|
AA |
Red |
On |
Auto-answer enabled |
|
AA |
Red |
Off |
Auto-answer disabled |
|
CD |
Red |
On |
Carrier signal detected or when SW2/6 is on |
|
CD |
Red |
Off |
Carrier signal not detected |
|
OH |
Red |
On |
Modem is off-hook |
|
OH |
Red |
Off |
Modem is on-hook |
|
RD |
Red |
Blinking |
Modem is receiving data |
|
RD |
Red |
Off |
Modem is not receiving data |
|
SD |
Red |
Blinking |
Modem is transmitting data |
|
SD |
Red |
Off |
Modem is not transmitting data |
|
MR |
Red |
On |
Power is on |
|
MR |
Red |
Off |
Power is off |
|
MR |
Red |
Blinking |
During test mode, retraining, including online fallback |
|
RS |
Red |
On |
RTS signal is high |
|
RS |
Red |
Off |
RTS signal is low |
|
CS |
Red |
On |
CTS signal is high and during synchronous mode |
|
CS |
Red |
Off |
CTS signal is low, synchronous mode disabled |
|
ARQ |
Red |
On |
Error correction enabled |
|
ARQ |
Red |
Off |
Error correction disabled |
|
ARQ |
Red |
Blinking |
Error correction activated |
|
SYN |
Red |
On |
AT&M3 is set or AT&M1 and synchronous mode is set |
|
SYN |
Red |
Off |
Modem not in synchronous mode |
|
SUPPORTED COMMAND SET |
|
Basic AT Commands |
|
AT, +++, A/ |
|
A, E, F, H, M, O, P, Q, S, T, V, X |
|
&F, &G, &J, &P, &W, &X, &Z |
|
S Registers |
|
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S26 |
|
Note: See MHI Help file for full command documentation. |
Proprietary AT Command Set
|
ABORT | |
|
Type: |
Immediate |
|
Format: |
<any key> |
|
Description: |
Aborts current command issued; dial, repeat mode (>), and repeat command (A>) |
|
BIT-MAPPED REGISTER S13 | ||
|
Format |
AT [cmds] S13=n [cmds] | |
|
Default: |
0 | |
|
Range: |
0-255 | |
|
Unit: |
Bit-mapped | |
|
Description: |
Controls DTR reset, DTR dialing, reset dialing, and MNP3. | |
|
Bit |
Value |
Function |
|
0 |
í 01 |
DTR normal Reset on low DTR |
|
1 |
í 01 |
Normal auto answer operation When ring is received, enter originate and listen for answer tone |
|
2 |
í 01 |
Pause 250msec. Before displaying result codes Immediate result code display |
|
3 |
í 01 |
DTR dialing disabled DTR dialing enabled |
|
4 |
í 01 |
Reset dialing disabled Reset dialing enabled |
|
5 |
í 0 |
Not used |
|
6 |
í 01 |
MNP 3 enabled MNP 3 disabled |
|
7 |
í 01 |
Hardware reset disabled Hardware reset enabled |
|
BIT-MAPPED REGISTER S15 | ||
|
Format: |
AT [cmds] S15=n [cmds] | |
|
Default: |
0 | |
|
Range: |
0-255 | |
|
Unit: |
Bit-mapped | |
|
Description: |
Controls HST high frequency equalization, online fallback, back channel, non-error-correcting mode buffer, MNP4, and BS/DEL switch, MNP compliance, and Interbridge network compatibility. | |
|
Bit |
Value |
Function |
|
0 |
í 01 |
HST high frequency equalization enabled HST high frequency equalization disabled |
|
1 |
í 01 |
Online fallback enabled Online fallback disabled |
|
2 |
í 01 |
450bps back channel enabled 450bps back channel disabled |
|
3 |
í 01 |
Non-error-correcting mode transmit buffer set to 1.5KB Non-error-correcting mode transmit buffer set to 128 bytes |
|
4 |
í 01 |
MNP 4 enabled MNP 4 disabled |
|
5 |
í 01 |
Use backspace key for delete disabled Use backspace key for delete enabled (May cause software incompatibility) |
|
6 |
í 01 |
MNP normal MNP adjusted for non compliant modems |
|
7 |
í 01 |
Interbridge network compatibility disabled Interbridge network compatibility enabled |
|
BREAK LENGTH | |
|
Type: |
Register |
|
Format: |
AT [cmds] S21=n [cmds] |
|
Default: |
10 |
|
Range: |
Unidentified |
|
Unit: |
10 ms |
|
Description: |
Sets the length of error control mode breaks sent from DCE to DTE |
|
BREAK TYPE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Yn [cmds] |
|
Description: |
Configures action of break signal |
|
Command |
Function |
|
&Y0 |
Break empties buffer |
|
í &Y1 |
Break empties buffer and is sent immediately |
|
&Y2 |
Break does not empty buffer and is sent immediately |
|
&Y3 |
Send break with transmitted data |
|
COMMPRESSION | ||
|
Type: |
Configuration | |
|
Format: |
AT [cmds] &Kn [cmds] | |
|
Description: |
Controls data compression | |
|
Command |
Function | |
|
&K0 |
Data compression disabled | |
|
í &K1 |
Auto enable/disabled data compression | |
|
&K2 |
Data compression enabled | |
|
CONNECTION SPEED | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Nn [cmds] |
|
Description: |
Sets required connection speed |
|
Command |
Function |
|
í &N0 |
Variable |
|
&N1 |
300bps |
|
&N2 |
1200bps |
|
&N3 |
2400bps |
|
&N4 |
4800bps |
|
&N5 |
7200bps |
|
&N6 |
9600bps |
|
DATA SET READY (DSR) | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Sn [cmds] |
|
Description: |
Selects DSR options |
|
Command |
Function |
|
&S0 |
DSR forced high |
|
&S1 |
DSR high only while modem is connected |
|
DIAL | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] D<#> [cmds] |
|
Example: |
ATDT 443-3388,,,1111; |
|
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 |
|
í P |
Pulse dialing enabled |
|
T |
Tone dialing enabled |
|
, |
Dialing paused for 2 seconds |
|
; |
Modem returned to command state after dialing. Can only be placed at the end of the dial command. |
|
! |
Flash function initiated |
|
/ |
Pause for 125ms then proceed with dial string |
|
@ |
Dial, wait for quiet answer, then continue to execute the rest of the dial string |
|
W |
Dial, wait for second dial tone, then continue to execute the rest of the dial string |
|
R |
Answer mode enabled, originate mode disabled following handshake initiation |
|
DIAL - STORED NUMBER | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] DSn [cmds] |
|
Description: |
Dial stored number from memory location n |
|
DISCONNECT BUFFER DELAY | |
|
Type: |
Register |
|
Format |
AT [cmds] S38=n [cmds] |
|
Default: |
0 |
|
Range: |
Unidentified |
|
Unit: |
1 second |
|
Description: |
Sets maximum duration allowed during buffered data calls for modem to perform clearing functions after losing carrier-signal or receiving a clear call signal from the remote modem and before initiating hang-up process. A value of 0 will allow the modem to hanging-up after DTR drops. |
|
DSR TIMER | |
|
Type: |
Register |
|
Format: |
AT [cmds] S24=n [cmds] |
|
Default: |
0 |
|
Range: |
0-25 |
|
Unit: |
.01 second |
|
Description: |
Sets the delay between DSR pulses, when &S1 is set |
|
ERROR CORRECTION MODE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Mn [cmds] |
|
Description: |
Selects active error correction protocols |
|
Command |
Function |
|
&M0 |
Normal mode only |
|
&M3 |
Continuos synchronous mode |
|
í &M4 |
Auto-detect mode |
|
&M5 |
ARQ mode only |
|
EXTENDED RESULT CODES | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &An [cmds] |
|
Description: |
Selects extended result codes |
|
Command |
Function |
|
&A0 |
/ARQ result codes disabled |
|
í &A1 |
/ARQ result codes enabled |
|
FLOW CONTROL CHARACTER - XOFF | |
|
Type: |
Register |
|
Format: |
AT [cmds] S23=n [cmds] |
|
Default: |
19 |
|
Range: |
11-127 |
|
Unit: |
ASCII |
|
Description: |
Sets the character used to represent XOFF |
|
FLOW CONTROL CHARACTER - XON | |
|
Type: |
Register |
|
Format: |
AT [cmds] S22=n [cmds] |
|
Default: |
17 |
|
Range: |
11-127 |
|
Unit: |
ASCII |
|
Description: |
Sets the character used to represent XON |
|
FLOW CONTROL TYPE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Hn [cmds] |
|
Description: |
Sets type of flow control used by modem |
|
Command |
Function |
|
í &H0 |
Flow control disabled |
|
&H1 |
CTS/RTS flow control enabled |
|
&H2 |
XON/XOFF flow control enabled |
|
&H3 |
CTS/RTS and XON/XOFF flow control enabled |
|
FLOW CONTROL TYPE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Rn [cmds] |
|
Description: |
Controls receive data hardware flow control and RTS signals |
|
Command |
Function |
|
&R0 |
Delay RTS signal before sending CTS signal |
|
í &R1 |
Modem ignores RTS |
|
&R2 |
Received data to DTE when RTS is on |
|
FLOW CONTROL PASS-THROUGH | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &In [cmds] |
|
Description: |
Allows modem to act on and then transmit XON/XOFF characters |
|
Command |
Function |
|
í &I0 |
Software flow control disabled |
|
&I1 |
XON/XOFF pass-through enabled |
|
&I2 |
XON/XOFF pass-through disabled |
|
&I3 |
Host mode enabled, Hewlett Packard protocol |
|
&I4 |
Terminal mode enabled, Hewlett Packard protocol |
|
&I5 |
XON/XOFF to remote for non-ARQ link flow control enabled |
|
HELP SCREENS | |
|
Type: |
Immediate |
|
Format: |
AT <prefix>$ |
|
Description: |
Shows command help screens for all commands beginning with the given prefix, or no prefix if none is given. |
|
Command |
Function |
|
$ |
Shows command summary help screen |
|
&$ |
Shows extended command summary help screen |
|
D$ |
Shows dial command summary help screen |
|
S$ |
Shows S-register summary help screen |
|
<CTRL>-S |
Stop/restart display of help screen |
|
<CTRL>-C |
Cancel display of help screen |
|
<CTRL>-K |
Cancel display of help screen |
|
INACTIVITY TIMER | |
|
Type: |
Register |
|
Format: |
AT [cmds] S19=n [cmds] |
|
Default: |
0 |
|
Range: |
Unidentified |
|
Unit: |
1 minute |
|
Description: |
Sets the length of time that the modem does not receive information before it disconnects. |
|
LEASED LINE | ||
|
Type: |
Configuration | |
|
Format: |
AT [cmds] &Ln [cmds] | |
|
Description: |
Controls lease line operation | |
|
Command |
Function | |
|
í &L0 |
lease line operation disabled | |
|
&L1 |
lease line operation enabled | |
|
LOCK SERIAL PORT | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Bn [cmds] |
|
Description: |
Sets operation of serial port speed |
|
Command |
Function |
|
í &B0 |
Serial speed follows connect speed |
|
&B1 |
Serial speed locked |
|
&B2 |
Serial speed locked in ARQ mode only |
|
MODULATION SELECTION | ||
|
Type: |
Register | |
|
Format: |
AT [cmds] S27=n [cmds] | |
|
Description: |
Controls the modulation for 300bps transmission | |
|
Command |
Function | |
|
S27=0 |
Bell103 only | |
|
S27=1 |
ITU-T V.21, all calls answered in either Bell103 or V.21, originate calls in V.21 | |
|
PAUSE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] / [cmds] |
|
Description: |
Command string execution is paused for 125ms |
|
Note: |
Multiple slashed can be used consecutively to add up to the duration of delay desired. |
|
REPEAT COMMAND CONTINUALLY | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] > [cmds] |
|
Description: |
Causes modem to repeat command continually until <any key> is pressed |
|
Note: |
If used in the dial string, 10 attempts will be made. |
|
REPEAT COMMAND STRING | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] A> [cmds] |
|
Description: |
Causes modem to repeat continually last issued command until <any key> is pressed |
|
REPORT INFORMATION | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] In [cmds] |
|
Description: |
Displays modem properties |
|
Command |
Function |
|
I0 |
Reports product code |
|
I1 |
Reports ROM checksum result |
|
I2 |
Reports RAM checksum result |
|
I3 |
Reports current call time or clock time |
|
I4 |
Reports current command settings |
|
I5 |
Reports current NVRAM settings |
|
I6 |
Reports current connections statistics |
|
I7 |
Reports product configuration |
|
TEST MODES | |
|
Type: |
Register |
|
Format: |
AT [cmds] S16=n [cmds] |
|
Description: |
Selects modem test modes |
|
Command |
Function |
|
í S16=0 |
Test mode disabled |
|
S16=1 |
Analog loopback test enabled |
|
S16=2 |
Dial test enabled |
|
S16=4 |
Test pattern enabled |
|
S16=5 |
Analog loopback test with test pattern enabled |
|
S16=8 |
Remote digital loopback enabled |
|
TIME DISPLAY | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] Kn [cmds] |
|
Description: |
Displays the current call time or clock time |
|
Command |
Function |
|
í K0 |
Display length of last call |
|
K1 |
Display actual time |
|
TRANSMITTER | ||
|
Type: |
Configuration | |
|
Format: |
AT [cmds] Cn [cmds] | |
|
Description: |
Controls the transmitter | |
|
Command |
Function | |
|
C0 |
Transmitter disabled, receive only mode | |
|
í C1 |
Transmitter enabled | |
|
V.32 - HANDSHAKE TIME | |
|
Type: |
Register |
|
Format: |
AT [cmds] S28=n [cmds] |
|
Default: |
8 |
|
Range: |
0-255 |
|
Unit: |
.1 second |
|
Description: |
Sets length of V.32 handshake |