3COM CORPORATION
COURIER V.34 FAX (INTERNAL)
Card Type |
Fax, Modem (asynchronous, synchronous) |
Chip Set |
U.S. Robotics |
Maximum Data Rate |
28.8Kbps |
Maximum Fax Rate |
14.4Kbps |
Data Bus |
8-bit ISA |
Fax Class |
Class I & II |
Data Modulation Protocol |
Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, V.25bis, V.32, V.32bis, V.34 Rockwell V.FC U.S. Robotics HST, V.32terbo |
Fax Modulation Protocol |
ITU-T V.17, V.21, V.27ter, V.29 |
Error Correction/Compression |
HST, MNP5, V.42, V.42bis |
CONNECTIONS | ||||||
Function |
Label |
Function |
Label | |||
Line out |
CN1 |
Line in |
CN2 |
USER CONFIGURABLE SETTINGS | ||
Setting |
Label |
Position |
í DTR normal |
SW1/A |
Off |
DTR forced high |
SW1/A |
On |
í Verbose (word) format enabled |
SW1/B |
Off |
Numeric format enabled |
SW1/B |
On |
í Result code display enabled |
SW1/C |
On |
Result code display disabled |
SW1/C |
Off |
í Local echo enabled |
SW1/D |
Off |
Local echo disabled |
SW1/D |
On |
í Auto-answer disabled |
SW1/E |
On |
Auto-answer enabled, off-hook on first ring |
SW1/E |
Off |
í CD normal |
SW1/F |
Off |
CD forced high |
SW1/F |
On |
í Result code display enabled in both originate and answer mode |
SW1/G |
Off |
Result code display enabled in originate mode only |
SW1/G |
On |
í Smart mode |
SW1/H |
On |
Dumb mode |
SW1/H |
Off |
í Escape code response: modem goes on-hook, off-line command mode, returns NO CARRIER |
SW1/I |
Off |
Escape code response: modem stays on-line, on-line command mode, returns OK |
SW1/I |
On |
í Reset and load from profiles in NVRAM |
SW1/J |
Off |
Reset and load from factory settings in ROM |
SW1/J |
On |
SERIAL PORT ADDRESS | ||||
Setting |
JP1/A |
JP1/B |
JP1/C |
JP1/D |
COM1 (3F8h) |
Closed |
Open |
Open |
Open |
COM2 (2F8h) |
Open |
Closed |
Open |
Open |
COM3 (3E8h) |
Open |
Open |
Closed |
Open |
COM4 (2E8h) |
Open |
Open |
Open |
Closed |
INTERRUPT SELECTION | |||||
Setting |
JP2/A |
JP2/B |
JP2/C |
JP2/D |
JP2/E |
2 |
Closed |
Open |
Open |
Open |
Open |
3 |
Open |
Closed |
Open |
Open |
Open |
4 |
Open |
Open |
Closed |
Open |
Open |
5 |
Open |
Open |
Open |
Closed |
Open |
7 |
Open |
Open |
Open |
Open |
Closed |
Proprietary AT Command Set
ABORT | |
Type: |
Immediate |
Format: |
Any key |
Description: |
Aborts answering/originating a call; modem hangs up. |
ACCOUNT ACCESS | |
Type: |
Immediate |
Format: |
AT%S=n <cr> |
Description: |
Acquire access to security accounts without disabling security. (n= local access password) |
ANSWER | |
Type: |
Immediate |
Format: |
AT [cmds] A |
Description: |
Enables answer mode; the modem goes off-hook. |
ANSWER SEQUENCE | |
Type: |
Configuration |
Format: |
AT [cmds] Bn [cmds] |
Description: |
Selects the answer sequence the modem will use |
Command |
Function |
í B0 |
ITU-T answer sequence enabled |
B1 |
Bell answer sequence enabled, required for all HST Cellular calls. |
ATTENTION | |
Type: |
Immediate |
Format: |
AT [cmds] |
Description: |
Tells the modem that a command follows or use alone to test OK result code |
BIT-MAPPED REGISTER S54 | ||
Format: |
AT [cmds] S54=n [cmds] | |
Default: |
0 | |
Range: |
0-255 | |
Unit: |
Bit-mapped | |
Description: |
Controls call indicate during V.34 operation and V.8 during V.34 operation. | |
Bit |
Value |
Function |
5 - 0 |
000000 |
Not used |
6 |
í 01 |
Call indicate during V.34 operation enabled Call indicate during V.34 operation disabled |
7 |
í 01 |
V.8 during V.34 operation enabled V.8 during V.34 operation disabled |
BIT-MAPPED REGISTER S13 | ||
Format |
AT [cmds] S13=n [cmds] | |
Default: |
0 | |
Range: |
0-255 | |
Unit: |
Bit-mapped | |
Description: |
Controls DTR reset, reverse operations, reset dialing, HST, MNP3, and custom applications. | |
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 |
Immediate result code display Pause 250msec before displaying result codes |
3 |
í 01 |
DTR dialing disabled DTR dialing enabled |
4 |
í 01 |
Reset dialing disabled Reset dialing enabled |
5 |
í 01 |
Enable HST Disable HST (used for testing V.32terbo in Dual Standard modems) |
6 |
í 01 |
MNP 3 enabled MNP 3 disabled |
7 |
í 01 |
Custom applications Custom applications |
BIT-MAPPED REGISTER S14 | |||||
Format: |
AT [cmds] S14=n [cmds] | ||||
Default: |
0 | ||||
Range: |
0-255 | ||||
Description: |
Controls disconnect, and retrain | ||||
Bit |
Value |
Function | |||
0 |
í 01 |
Normal operation Disconnect on escape code | |||
6 - 1 |
000000 |
Not used | |||
7 |
í 01 |
Enable retrain Disable retrain |
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, BS/DEL switch, MNP compliance, and custom applications. | |
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 |
6 |
í 01 |
MNP normal MNP adjusted for non-compliant modems |
7 |
í 01 |
Custom applications Custom applications |
BIT-MAPPED REGISTER S27 | ||
Format: |
AT [cmds] S27=n [cmds] | |
Default: |
0 | |
Range: |
0-191 | |
Unit: |
Bit-mapped | |
Description: |
Controls V.21, V.32 encoding and modulation, V.42 answer tone and handshake, and 9600 result codes. | |
Bit |
Value |
Function |
0 |
í 01 |
V.21 disabled V.21 enabled |
1 |
í 01 |
V.32 non-trellis coding disabled V.32 non-trellis coding enabled |
2 |
í 01 |
V.32 modulation enabled V.32 modulation disabled |
3 |
í 01 |
2100Hz answer tone enabled 2100Hz answer tone disabled; allows V.42 modems to connect quicker. |
5, 4 |
í 0001 10 11 |
V.42 detect, LAPM and MNP enabled V.42 detect and LAPM enabled MNP enabled LAPM enabled |
6 |
í 0 |
Not used |
7 |
í 01 |
Actual result codes displayed Force 9600 result codes |
BIT-MAPPED REGISTER S34 | ||
Format: |
AT [cmds] S34=n [cmds] | |
Default: |
0 | |
Range: |
0-255 | |
Unit: |
Bit-mapped | |
Description: |
Controls V.32bis/V.32terbo modulations, LED selection, MI/MIC, and remote access busy message. | |
Bit |
Value |
Function |
0 |
í 01 |
V.32bis enabled V.32bis disabled |
1 |
í 01 |
Enhanced V.32bis enabled Enhanced V.32bis disabled |
2 |
í 01 |
V.32terbo fast retrain enabled V.32terbo fast retrain disabled |
3 |
í0 1 |
V.23 modulation disabled V.23 modulation enabled |
4 |
í 01 |
Change MR LED to DSR disabled Change MR LED to DSR enabled |
5 |
í 01 |
MI/MIC disabled MI/MIC enabled |
6 |
í 01 |
Remote access busy message enabled Remote access busy message disabled |
7 |
í 01 |
V.32terbo enabled V.32terbo disabled |
BIT-MAPPED REGISTER S56 | |||||
Format: |
AT [cmds] S56=n [cmds] | ||||
Default: |
0 | ||||
Range: |
0-192 | ||||
Description: |
Controls enable/disable V.34 and V.FC. | ||||
Bit |
Value |
Function | |||
5 - 0 |
000000 |
Not used | |||
6 |
í 01 |
V.34 enabled V.34 disabled | |||
7 |
í 01 |
V.FC enabled V.FC disabled |
BREAK LENGTH | |
Type: |
Register |
Format: |
AT [cmds] S21=n [cmds] |
Default: |
10 |
Range: |
0-255 |
Unit: |
.01 second |
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 |
Empty buffer only |
í &Y1 |
Empties buffer and break is sent immediately |
&Y2 |
Do not empty buffer and break is sent immediately |
&Y3 |
Do not empty buffer and send break along with transmitted data |
CARRIER DETECT (CD) | |
Type: |
Configuration |
Format: |
AT [cmds] &Cn [cmds] |
Description: |
Sets the CD signal |
Note: Modem controls CD signal by the SW1/F setting, AT&Cn not saved in NVRAM. (External models only) | |
Command |
Function |
&C0 |
CD signal forced high |
&C1 |
CD signal normal |
CLOCK SOURCE - SYNCHRONOUS TRANSMIT | |
Type: |
Configuration |
Format: |
AT [cmds] &Xn [cmds] |
Description: |
Selects DTE transmit clock source |
Command |
Function |
í &X0 |
Modem generates clock |
&X1 |
DTE generates clock |
&X2 |
Modem generates clock from the receive carrier signal |
COMPRESSION | |
Type: |
Configuration |
Format: |
AT [cmds] &Kn [cmds] |
Description: |
Selects data compression |
Command |
Function |
&K0 |
Data compression disabled |
í &K1 |
Auto enabled/disable data compression |
&K2 |
Data compression enabled |
&K3 |
V.42bis data compression only enabled |
COMPRESSION AND ERROR CORRECTION | ||
Type: |
Register | |
Format |
AT [cmds] S51=n [cmds] | |
Default: |
0 | |
Range: |
0-7 | |
Unit: |
Bit-mapped | |
Description: |
Selects compression and error correction for specific modulations, and controls handset exclusion delay | |
Bit |
Value |
Function |
0 |
í 01 |
MNP/V.42 disabled during V.22 operation MNP/V.42 disabled during V.22 operation |
1 |
í 01 |
MNP/V.42 disabled during V.22bis operation MNP/V.42 disabled during V.22bis operation |
2 |
í 01 |
MNP/V.42 disabled during V.32/V.32bis/V.32terbo operation MNP/V.42 disabled during V.32/V.32bis/V.32terbo operation |
7 |
í 01 |
Handset exclusion delay disabled Handset exclusion delay enabled |
CONNECTION SPEED | |
Type: |
Configuration |
Format: |
AT [cmds] &Nn [cmds] |
Description: |
Sets connection speed, variable or fixed. |
Command |
Function |
í &N0 |
Variable |
&N1 |
300bps |
&N2 |
1200bps |
&N3 |
2400bps |
&N4 |
4800bps |
&N5 |
7200bps |
&N6 |
9600bps |
&N7 |
12Kbps |
&N8 |
14.4Kbps |
&N9 |
16.8Kbps (HST, V.32terbo, V.34 and V.FC only) |
&N10 |
19.2Kbps (V.32terbo, V.34 and V.FC only) |
&N11 |
21.6Kbps (V.32terbo, V.34 and V.FC only) |
&N12 |
24Kbps (V.34 and V.FC only) |
&N13 |
26.4Kbps (V.34 and V.FC only) |
&N14 |
28.8Kbps (V.34 and V.FC only) |
DATA SET READY (DSR) | |
Type: |
Configuration |
Format: |
AT [cmds] &Sn [cmds] |
Description: |
Selects DSR options |
Command |
Function |
í &S0 |
DSR forced high |
&S1 |
DSR high only while modem is handshaking or connected |
&S2 |
DSR toggled on loss of CD signal with CTS following CD signal |
&S3 |
DSR toggled on loss of CD signal without CTS following CD signal |
&S4 |
DSR and CD signals are sent to DTE at the same time |
DATA SET READY (DSR) - PULSED SIGNAL | |
Type: |
Register |
Format: |
AT [cmds] S24=n [cmds] |
Default: |
150 |
Range: |
0-255 |
Unit: |
.02 second |
Description: |
Sets the length of time between DSR on/off when the modem is set to &S2 or &S3. |
DATA TERMINAL READY (DTR) | |
Type: |
Configuration |
Format: |
AT [cmds] &Dn [cmds] |
Description: |
Selects modem response to DTR |
Command |
Function |
&D0 |
Modem does not respond to DTR, DTR signal forced high |
&D1 |
Modem goes to command mode after DTR toggles |
&D2 |
Modem uses DTR as normal |
DETECT TONE | |
Type: |
Immediate |
Format: |
AT [cmds] %T [cmds] |
Description: |
Enables the modem to detect tone frequencies of dialing modems. Used primarily for network applications. To enable, ATH1<cr> then AT%T. To disabled, press any key. |
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. |
Modifier |
Function |
í P |
Pulse dialing enabled |
T |
Tone dialing enabled |
, |
Dialing paused for 2 seconds to a maximum amount of time specified in S8 register |
; |
Modem returned to command state after dialing. Can only be placed at the end of the dial command. |
" |
Dials letters that follow, ATDT"GOMICRO |
! |
Flash function initiated |
W |
Dialing resumed following dial tone detection |
@ |
Wait for quiet answer, then proceeds to execute the rest of the dial string. |
/ |
125 msec delay before proceeding with dial string |
R |
Answer mode enabled; originate mode disabled following handshake initiation. |
DIAL - LAST NUMBER | |
Type: |
Immediate |
Format: |
AT [cmds] DL [cmds] |
Description: |
Re-dial last number dialed |
Note: Use ATDL instead of A/ if you need to use commands other than the dial command. |
DIAL - STORED NUMBER | |
Type: |
Immediate |
Format: |
AT [cmds] DSn [cmds] |
Description: |
Dial stored number from memory location n. (n=0-9) |
DISCONNECT BUFFER DELAY | |
Type: |
Register |
Format |
AT [cmds] S38=n [cmds] |
Default: |
0 |
Range: |
0-255 |
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 allows the modem to hang-up immediately. |
DTR CHANGE THRESHOLD | |
Type: |
Register |
Format |
AT [cmds] S25=n [cmds] |
Default: |
5 |
Range: |
0-255 |
Unit: |
.01 second |
Description: |
Sets maximum time a change in the DTR signal will be ignored |
ECHO | |
Type: |
Configuration |
Format: |
AT [cmds] En [cmds] |
Description: |
Controls echo function; display keyboard commands when enabled. |
Command |
Function |
E0 |
Echo function disabled |
E1 |
Echo function enabled |
ECHO - ON-LINE | |
Type: |
Configuration |
Format: |
AT [cmds] Fn [cmds] |
Description: |
Selects whether commands sent while in data mode are echoed |
Command |
Function |
F0 |
Local echo enabled |
í F1 |
Local echo disabled |
EDIT - SECURITY SYSTEMS | ||
Type: |
Immediate | |
Format: |
AT [cmds] %E=n [cmds] | |
Description: |
Clears chosen field or password | |
Command |
Function | |
%E=1 |
Clear local access password | |
%E=2 |
Clear auto-pass password | |
%E=3 |
Clear passwords in accounts 0-9 | |
%E=4 |
Clear phone numbers in accounts 0-9 | |
%E=5 |
Disable account, dial-back, and new number fields in accounts 0-9 |
ERROR CORRECTION MODE (ARQ) | |
Type: |
Configuration |
Format: |
AT [cmds] &Mn [cmds] |
Description: |
Selects active error correction protocols |
Command |
Function |
&M0 |
Normal mode only |
&M1 |
On-line synchronous mode without V.25bis |
í &M4 |
Auto-detect mode |
&M5 |
ARQ mode only |
&M6 |
V.25bis on-line synchronous mode with a protocol link similar to BISYNC |
&M7 |
V.25bis on-line synchronous mode with HDLC protocol link |
ESCAPE SEQUENCE | |
Type: |
Immediate |
Format: |
+++AT [cmds] <CR> |
Description: |
Initiates the escape sequence and returns the modem to the on-line command state if it receives three escape characters set in S2 within the time allotted by S12. |
Note: |
Do not precede this command with AT. |
EXTENDED RESULT CODES | |
Type: |
Configuration |
Format: |
AT [cmds] &An [cmds] |
Description: |
Selects extended result codes |
Command |
Function |
&A0 |
Extended result codes disabled |
&A1 |
ARQ result codes enabled |
&A2 |
V.32, HST, V.34 or V.FC result code enabled |
í &A3 |
Error control and compression result codes enabled |
FACTORY DEFAULT PROFILE | ||
Type: |
Configuration | |
Format: |
AT [cmds] &Fn [cmds] | |
Description: |
Sets values in active profile to values found in the default profile | |
Command |
Function | |
&F0 |
No flow control template | |
í &F1 |
Hardware flow control template | |
&F2 |
Software flow control template | |
&F3 |
HST Cellular template |
FLOW CONTROL CHARACTER - XOFF | |
Type: |
Register |
Format: |
AT [cmds] S23=n [cmds] |
Default: |
19 |
Range: |
0-127 |
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: |
0-127 |
Unit: |
ASCII |
Description: |
Sets the character used to represent XON. |
FLOW CONTROL PASSTHROUGH | |
Type: |
Configuration |
Format: |
AT [cmds] &In [cmds] |
Description: |
Allows modem to act on, then transmit XON/XOFF characters. |
Command |
Function |
í &I0 |
Software flow control disabled |
&I1 |
XON/XOFF passthrough enabled |
&I2 |
XON/XOFF passthrough disabled |
&I3 |
ENQ/ACK enabled in host mode |
&I4 |
ENQ/ACK enabled in terminal mode |
&I5 |
XON/XOFF passthrough disabled in error correction mode |
FLOW CONTROL TYPE | |
Type: |
Configuration |
Format: |
AT [cmds] &Hn [cmds] |
Description: |
Sets type of flow control used by modem |
Command |
Function |
&H0 |
Flow control disabled |
í &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 CTS response after RTS signal (RTS/CTS delay) |
&R1 |
Modem ignores RTS |
í &R2 |
Received data to DTE when RTS is on |
GUARD TONE | |
Type: |
Configuration |
Format: |
AT [cmds] &Gn [cmds] |
Description: |
Commands the modem to transmit a guard tone in V.22/V.22bis mode |
Note: Used primarily for international data transmission | |
Command |
Function |
í &G0 |
Guard tone disabled |
&G1 |
550Hz guard tone enabled |
&G2 |
1800Hz guard tone enabled |
HOOK CONTROL | |
Type: |
Immediate |
Format: |
AT [cmds] Hn [cmds] |
Description: |
Selects whether the modem is on-hook or off-hook |
Command |
Function |
H0 |
Modem commanded to go on-hook (hang-up) |
H1 |
Modem commanded to go off-hook (pick-up) |
INACTIVITY TIMER | |
Type: |
Register |
Format: |
AT [cmds] S19=n [cmds] |
Default: |
0 |
Range: |
0-255 |
Unit: |
1 minute |
Description: |
Sets the length of time that the modem does not receive information before it disconnects. S19=0 will disable. |
LEASED-LINE RECONNECT | |
Type: |
Register |
Format: |
AT [cmds] S44=n [cmds] |
Default: |
15 |
Range: |
0-255 |
Unit: |
1 second |
Description: |
Sets the time when the modem will reconnect in leased-line mode when it detects a loss of carrier. |
LINE TYPE | |
Type: |
Configuration |
Format: |
AT [cmds] &Ln [cmds] |
Description: |
Selects line type |
Command |
Line Type |
í &L0 |
Switched line (PSTN/Dial-up) |
&L1 |
Leased-line |
&L2 |
Cellular operation |
LOCK SERIAL PORT | |
Type: |
Configuration |
Format: |
AT [cmds] &Bn [cmds] |
Description: |
Sets operation of serial port speed |
Command |
Function |
&B0 |
Serial speed follows connect speed |
í &B1 |
Serial speed locked |
&B2 |
Serial speed locked in ARQ mode only |
MAPPING | |||||
Type: |
Register | ||||
Format: |
AT [cmds] S55=n [cmds] | ||||
Default: |
0 | ||||
Range: |
0-15 | ||||
Description: |
Controls all Map options | ||||
Bit |
Value |
Function | |||
0 |
í 01 |
8S-2D map enabled 8S-2D map disabled | |||
1 |
í 01 |
16S-4D map enabled 16S-4D map disabled | |||
2 |
í 01 |
32S-2D map enabled 32S-2D map disabled | |||
3 |
í 01 |
64S-4D map enabled 64S-4D map disabled |
ON-LINE | |
Type: |
Immediate |
Format: |
AT [cmds] On [cmds] |
Description: |
Controls on-line command (data transmission) mode options. |
Note: The O command must be placed at the end of the command string. | |
Command |
Function |
O0 |
On-line command mode with no retraining enabled |
O1 |
On-line command mode with retraining enabled |
PACKET SIZE - REDUCE | ||
Type: |
Register | |
Format: |
AT [cmds] S33=n [cmds] | |
Description: |
Reduces the size of the packets being sent | |
Command |
Function | |
í S33=0 |
Reduce packet size disabled | |
S33=1 |
Reduce packet size enabled |
PASSWORD - ASSIGNMENT | |
Type: |
Configuration |
Format: |
AT [cmds] %L=n [cmds] |
Description: |
Assign an account password as the local access password. |
PASSWORD - AUTO-PASS | |
Type: |
Configuration |
Format: |
AT [cmds] %V=PWn [cmds] |
Description: |
Make the password in account n as your auto-pass password |
PASSWORD - SECURITY | ||
Type: |
Configuration | |
Format: |
AT [cmds] %Pn=x [cmds] | |
Description: |
Sets, views or disables password security | |
Command |
Function | |
%Pn= |
Disable password security (%Pn=0 or 1) | |
%Pn=x |
Viewing privileges only (n=0), Viewing and configuration privileges (n=1) for specified password string (x). | |
%Pn? |
Display password n |
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) |
REMOTE ACCESS - ESCAPE CHARACTER | |
Type: |
Register |
Format: |
AT [cmds] S42=n [cmds] |
Default: |
126 |
Range: |
0-255 |
Unit: |
ASCII |
Description: |
Controls the remote access escape character, default character (~) Tilde. |
REMOTE ACCESS - LOG-IN ATTEMPTS | |
Type: |
Register |
Format: |
AT [cmds] S41=n [cmds] |
Default: |
0 |
Range: |
0-255 |
Unit: |
1 attempt |
Description: |
Sets the number of remote access log-in attempts. S41=0 disables and doesnt allow remote access. |
REMOTE ACCESS - SEQUENCE | |
Type: |
Register |
Format: |
AT [cmds] S43=n [cmds] |
Default: |
200 |
Range: |
0-255 |
Unit: |
.02 second |
Description: |
Sets the guard time for the remote access sequence, (~~~~). |
REMOTE CONFIGURATION CONTROL | ||
Type: |
Configuration | |
Format: |
AT [cmds] %Cn [cmds] | |
Description: |
Sets how the modem will react to remote configuration changes | |
Command |
Function | |
í C0 |
Remote configuration changes are deferred, this ensures that connections are made. | |
C1 |
Remote configuration changes are restored, restore original configuration after remote access. | |
C2 |
Remote configuration changes are effected immediately, changes are made now. |
REMOTE CONFIGURATION - DATA FORMAT | ||
Type: |
Configuration | |
Format: |
AT [cmds] %Fn [cmds] | |
Description: |
Sets parity | |
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 |
REMOTE CONFIGURATION - SERIAL PORT SPEED | ||
Type: |
Configuration | |
Format: |
AT [cmds] %Bn [cmds] | |
Description: |
Remotely configures the serial port speed | |
Command |
Function | |
%B0 |
Set serial port speed to 110Kbps | |
%B1 |
Set serial port speed to 300Kbps | |
%B2 |
Set serial port speed to 600bps | |
%B3 |
Set serial port speed to 1200bps | |
%B4 |
Set serial port speed to 2400bps | |
%B5 |
Set serial port speed to 4800bps | |
%B6 |
Set serial port speed to 9600bps | |
%B7 |
Set serial port speed to 19.2Kbps | |
%B8 |
Set serial port speed to 38.4Kbps | |
%B9 |
Set serial port speed to 57.6Kbps | |
%B10 |
Set serial port speed to 115.2Kbps |
REMOTE CONFIGURATION - V.25bis CLOCK SPEED | ||
Type: |
Configuration | |
Format: |
AT [cmds] %Nn [cmds] | |
Description: |
Sets the terminal to modem V.25bis clock speed | |
Command |
Function | |
%N0 |
Not used | |
%N1 |
Not used | |
%N2 |
Set clock speed to 1200bps | |
%N3 |
Set clock speed to 2400bps | |
%N4 |
Set clock speed to 4800bps | |
%N5 |
Set clock speed to 7200bps | |
í %N6 |
Set clock speed to 9600bps | |
%N7 |
Set clock speed to 12Kbps | |
%N8 |
Set clock speed to 14.4Kbps | |
%N9 |
Set clock speed to 16.8Kbps | |
%N10 |
Set clock speed to 19.2Kbps |
REPEAT COMMAND STRING | |
Type: |
Configuration |
Format: |
AT [cmds] > [cmds] |
Description: |
Causes modem to repeat command string until a keyboard key is pressed |
REPEAT DIAL STRING | |
Type: |
Immediate |
Format: |
A> |
Description: |
Repeat mode enabled and the dial string last executed will be carried out until a connection is established or 10 attempts made. |
Note: |
Do not precede this command with AT, or follow it with <CR>. |
REPEAT PREVIOUS COMMAND | |
Type: |
Immediate |
Format: |
A/ |
Description: |
Repeats previous command, mainly used for redial. |
Note: |
Do not precede this command with AT, or follow it with <CR>. |
REPORT INFORMATION | |
Type: |
Immediate |
Format: |
AT [cmds] In [cmds] |
Description: |
Displays information requested |
Command |
Function |
I0 |
Reports 4-digit product code |
I1 |
Reports ROM checksum |
I2 |
Reports RAM checksum |
I3 |
Reports call duration (ATK0) or real time (ATK1) |
I4 |
Reports current command settings |
I5 |
Reports NVRAM settings |
I6 |
Reports link diagnostics |
I7 |
Reports product configuration |
I10 |
Reports dial security account status information |
RESULT CODES | |
Type: |
Configuration |
Format: |
AT [cmds] Qn [cmds] |
Description: |
Enables modem to send result codes to the DTE |
Command |
Function |
Q0 |
Result code sending enabled |
Q1 |
Result code sending disabled |
Q2 |
Result code sending enabled while in originate mode |
RESULT CODE FORMAT | |
Type: |
Configuration |
Format: |
AT [cmds] Vn [cmds] |
Description: |
Selects word or numeric format for information-text and result codes |
Command |
Function |
V0 |
Numeric format enabled |
V1 |
Verbose (word) format enabled |
RTS TO CTS DELAY | |
Type: |
Register |
Format |
AT [cmds] S26=n [cmds] |
Default: |
1 |
Range: |
0-255 |
Unit: |
.01 second |
Description: |
Sets the duration of delay for CTS to respond to RTS status change in synchronous mode. |
SECURITY ACCOUNTS | |||||
Type: |
Configuration | ||||
Format: |
AT %An=(field parameters) <cr> | ||||
Example: |
AT%A0=DOG,Y,Y,N,1-234-567-8901<cr> | ||||
Description: |
Make and configure security accounts, (n=0-9) | ||||
Parameter options | |||||
Password enabled |
Account enabled |
Dialback enabled |
Allow new number |
Dialback number | |
8-characters Case sensitive |
Yes No |
Yes No |
Yes No |
37-characters (0-9) | |
DOG |
Y |
Y |
N |
1-234-567-8901 |
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, 13-107 enabled |
X2 |
Busy tone detection disabled, dial tone detection enabled; result codes 0-6, 10, 13-107 enabled; also adaptive dialing, wait for second dial tone, and fast dialing enabled. |
X3 |
Busy tone detection enabled, dial tone detection disabled; result codes 0-5, 7-8, 10, 13-107 enabled; also adaptive dialing, and wait for answer enabled. |
X4 |
Busy and dial tone detection enabled; result codes 0-10, 13-107 enabled; also adaptive dialing, wait for second dial tone, wait for answer, and fast dialing enabled. |
X5 |
Busy tone detection enabled, dial tone detection disabled; result codes 0-5, 7-107 enabled; also adaptive dialing, wait for second dial tone, and wait for answer enabled. |
X6 |
Busy and dial tone detection enabled; result codes 0-107 enabled; also adaptive dialing, wait for second dial tone, wait for answer, and fast dialing enabled. |
í X7 |
Busy and dial tone detection enabled; result codes 0-11, 13-107 enabled; also adaptive dialing, wait for second dial tone, wait for answer, and fast dialing enabled. |
Note: Valid numeric result codes; 0-8, 10-13, 18, 20, 21, 25, 47, 85, 91, 99, 103, and 107. |
SOFT RESET | |
Type: |
Immediate |
Format: |
AT [cmds] Z [cmds] |
Description: |
Restores modem profiles previously saved in non-volatile RAM |
Note: |
If SW1/J is OFF, then the modem will reset to AT&F0 profile. (External models only) |
SPEAKER MODE | |
Type: |
Configuration |
Format: |
AT [cmds] Mn [cmds] |
Description: |
Selects various speaker options |
Command |
Function |
M0 |
Speaker disabled |
í M1 |
Speaker enabled until carrier signal detected |
M2 |
Speaker enabled |
M3 |
Speaker enabled following dialing, then disabled after carrier signal detected. |
SPEAKER VOLUME | |
Type: |
Configuration |
Format: |
AT [cmds] Ln [cmds] |
Description: |
Controls speaker volume |
Note: Command works for internal models only, externals will return OK. | |
Command |
Function |
L0 |
Low volume setting |
L1 |
Low volume setting |
í L2 |
Medium volume setting |
L3 |
Highest volume setting |
STATUS-REGISTER | ||
Type: |
Configuration | |
Format: |
Read: AT [cmds] Sn? [cmds] Write: AT [cmds] Sn=x [cmds] | |
Description: |
Writes to or reads from a specified register. Valid values 0-255 | |
Command |
Function | |
Sn.b=x |
Write to register bit b using values 0 (off) and 1 (on) for x |
STORE ACTIVE PROFILE | |
Type: |
Configuration |
Format: |
AT [cmds] &Wn [cmds] |
Description: |
Writes the values for the active profile into the non-volatile RAM templates |
Command |
Function |
&W0 |
Write the active profile to stored template 0 |
&W1 |
Write the active profile to stored template 1 |
STORE COMMAND STRING | ||
Type: |
Configuration | |
Format: |
AT [cmds] &ZCn=(command string) | |
Description: |
Writes selected command string into the non-volatile memory at location n (n=0-9) | |
Command |
Function | |
&ZC=n |
Writes command string into the non-volatile memory at location n | |
&ZC? |
Displays stored command string |
STORE DIAL STRING | ||
Type: |
Configuration | |
Format: |
AT [cmds] &Zn=(phone # & modifiers) | |
Description: |
Writes selected dial string into the non-volatile memory at location n (n=0-9) | |
Note: The characters described in the D command are valid for use in the &Z command. | ||
Command |
Function | |
&Zn? |
Displays phone number from non-volatile memory at location n |
TEST MODES | ||
Type: |
Configuration | |
Format: |
AT [cmds] &Tn [cmds] | |
Description: |
Controls loopback tests: analog, digital, remote digital, and self tests. | |
Command |
Function | |
&T0 |
Testing disabled | |
&T1 |
Local analog loopback enabled | |
&T3 |
Local digital loopback enabled | |
&T4 |
Remote digital loopback enabled | |
&T5 |
Remote digital loopback prohibited | |
&T6 |
Remote digital loopback initiated | |
&T7 |
Remote digital loopback w/ self-test and error detector in progress | |
&T8 |
Local analog loopback w/ self-test and error detector in progress |
TEST MODES | |||||
Type: |
Register | ||||
Format: |
AT [cmds] S16=n [cmds] | ||||
Default: |
0 | ||||
Range: |
0-15 | ||||
Description: |
Controls tests, analog loopback, dial, test pattern and remote digital loopback. | ||||
Bit |
Value |
Function | |||
0 |
í 01 |
Local analog loopback disabled Local analog loopback enabled | |||
1 |
í 01 |
Dial test disabled Dial test enabled | |||
2 |
í 01 |
Test pattern disabled Test pattern enabled | |||
3 |
í 01 |
Remote digital loopback disabled Remote digital loopback enabled |
TEST TIMER | |
Type: |
Register |
Format |
AT [cmds] S18=n [cmds] |
Default: |
0 |
Range: |
0-255 |
Unit: |
1 second |
Description: |
Sets the maximum duration for modem tests |
Note: S18=0 disables the timer and allows an indefinite duration. |
TIME DISPLAY | |
Type: |
Immediate |
Format: |
AT [cmds] Kn [cmds] |
Description: |
Displays the current call time or clock time |
Command |
Function |
K0 |
Display length of last call, if off-line; duration of call while on-line. |
K1 |
Display actual time (HH:MM:SS) |
TRANSMITTER | ||
Type: |
Configuration | |
Format: |
AT [cmds] Cn [cmds] | |
Description: |
Controls the transmitter. | |
Command |
Function | |
C0 |
Disable transmitter, receive-only operation. | |
í C1 |
Enable transmitter |
VOICE/DATA SWITCH | ||
Type: |
Register | |
Format: |
AT [cmds] S32=n [cmds] | |
Description: |
Controls voice/data switch functions | |
Command |
Function | |
S32=0 |
All functions disabled | |
S32=1 |
Voice/data, originate | |
S32=2 |
Voice/data, answer | |
S32=3 |
Redial last number | |
S32=4 |
Dial number from stored position 0 | |
S32=5 |
Auto-answer on/off toggle | |
S32=6 |
Reset modem | |
S32=7 |
Remote digital loopback initiated | |
S32=8 |
Busy out phone line toggle | |
í S32=9 |
Execute command string from &ZC. If there is no command string, the modem acts on S32=1. |
V.21 - HANDSHAKE TIME | |
Type: |
Register |
Format: |
AT [cmds] S29=n [cmds] |
Default: |
20 |
Range: |
0-255 |
Unit: |
.1 second |
Description: |
Sets length of V.21 handshake |
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 |
V.25bis Command Set
CONNECT INCOMING CALLS | |
Type: |
Immediate |
Format: |
CIC |
Description: |
Instructs the modem to answer an incoming call; if no call is currently incoming, a result of INV will be returned. |
CALL REQUESTED NUMBER | |
Type: |
Immediate |
Format: |
CRN<#> |
Description: |
Dials the number given; it will ignore spaces and hyphens in the string. |
CALL REQUEST WITH ADDRESS | |
Type: |
Immediate |
Format: |
CRSn |
Description: |
Dials the number stored in NVRAM location n |
DISREGARD INCOMING CALL | |
Type: |
Immediate |
Format: |
DIC |
Description: |
Instructs the modem to ignore the incoming call, if the modem is set to automatically answer; if no call is currently incoming, a result of INV will be returned. |
PROGRAM NUMBER | |
Type: |
Configuration |
Format: |
PRNn |
Description: |
Stores a phone number in memory address n. |
REQUEST LIST OF FORBIDDEN NUMBERS | |
Type: |
Immediate |
Format: |
RFN |
Description: |
Requests the list of forbidden numbers from the modem; the modem is unable to dial numbers on this list until its power has been cycled; if this feature is not enabled, the modem will return INV. |
REQUEST LISTED NUMBERS | |
Type: |
Immediate |
Format: |
RLN |
Description: |
Requests the modem to return the list of stored numbers in NVRAM; if no numbers are stored, the modem will return LSN. |
V.25bis Result codes
CALL FAILURE INDICATOR | |||
Type: |
Response | ||
Format: |
CFIxx | ||
Description: |
Indicates that the attempt to connect failed | ||
Response |
Name |
Description | |
CFAB |
Abort |
The call was aborted because either no dialtone was detected or a character was received from the host computer. | |
CFCB |
DCE Busy |
An incoming call was detected after the dialing command was issued | |
CFET |
Engaged Tone |
A busy signal was detected | |
CFFC |
Forbidden Call |
The number given is on the forbidden list | |
CFNS |
Not Stored |
The memory address given did not contain a valid telephone number | |
CFNT |
No Tone |
The remote party did not issue a response tone | |
CFRT |
Ring Tone |
A responding tone was detected, but the call timed out before it was completed. |
CONNECTION | |
Type: |
Response |
Format: |
CNX |
Description: |
A connection has been successfully established |
LIST OF NUMBERS | |
Type: |
Response |
Format: |
LS |
Description: |
This code is given in response to a number just dialed |
LIST OF STORED NUMBERS | |
Type: |
Response |
Format: |
LSN |
Description: |
This code is given in response to a RLN command |
LIST OF STORED FORBIDDEN NUMBERS | |
Type: |
Response |
Format: |
LSF |
Description: |
This code is given in response to a RFN command; it indicates that the number is on the forbidden list and cannot be dialed. |
INCOMING CALL | |
Type: |
Response |
Format: |
INC |
Description: |
An incoming call has been detected |
INVALID | ||
Type: |
Response | |
Format: |
INV | |
Description: |
The modem was issued an improper command, optional parameters maybe displayed. | |
Response |
Description | |
INVMS |
Message syntax error | |
INVCU |
Unknown command | |
INVPS |
Parameter syntax error | |
INVPV |
Parameter value error |
VALID | |
Type: |
Response |
Format: |
VAL |
Description: |
The command issued is valid and is being executed |