ASPEN TECHNOLOGIES, INC.
14.4 ATF/ATV/ACF/ACV FAX MODEM
Card Type | Modem (asynchronous), Fax |
I/O Options | RJ-11 line in, RJ-11 line out |
Maximum Data Rate | 14.4Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Modulation | Bell 103A, 212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis |
Fax Modulation | Unidentified |
Error Correction/Compression | MNP5, V.42, V.42bis |
Fax Class | Class I & II |
Data Bus | 8-bit ISA |

CONNECTIONS | |||
Function | Label | Function | Label |
RJ-11 line | CN1 | RJ-11 line | CN2 |
SERIAL PORT ADDRESS SELECTION | ||
Setting | J9 | J10 |
3F8h (COM1:) | Pins 1 & 2 closed | Pins 1 & 2 closed |
2F8h (COM2:) | Pins 1 & 2 closed | Pins 2 & 3 closed |
3E8h (COM3:) | Pins 2 & 3 closed | Pins 1 & 2 closed |
2E8h (COM4:) | Pins 2 & 3 closed | Pins 2 & 3 closed |
INTERRUPT SELECTION | ||||
Setting | J5 | J6 | J7 | J8 |
3 | Open | Open | Open | Closed |
4 | Open | Open | Closed | Open |
5 | Open | Closed | Open | Open |
7 | Closed | Open | Open | Open |
SUPPORTED STANDARD COMMANDS |
Basic AT Commands |
AT, A/ |
A, B, C, E, F, H, M, O, V, W, X, Y, Z |
&C, &F, &J, &L, &T, &V, &W, &Y, &Z |
Extended AT Commands |
\A, \B, \G, \L, \O, \T, \U, \Z |
S-Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, S16, S18, S21, S22, S23 S25, S26 |
S27, S30, S36, S37, S38, S40, S41, S46, S48, S82, S86, S91, S95 |
Note: See MHI help file for complete information. |
Proprietary AT Command Set
AUTO-MODE DETECTION | |
Type: | Configuration |
Format: | AT [cmds] Nn [cmds] |
Description: | Selects options for handshake modulation |
Command | Function |
N0 | Speed of connection follows speed set in register S7 |
N1 | Negotiate at highest possible speed |
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Qn [cmds] |
Description: | Selects communications mode options |
Command | Mode |
&Q0 | Asynchronous mode, serial port speed follows connect speed. |
&Q1 | Asynchronous off-line command mode and synchronous connect mode. |
&Q2 | Asynchronous off-line command mode - modem autodials first number in directory, then synchronous connect mode. |
&Q3 | Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR. |
&Q5 | Error correction mode |
&Q6 | Buffered asynchronous mode |
&Q8 | MNP mode |
&Q9 | V.42bis mode |
DATA TERMINAL READY (DTR) | |
Type: | Configuration |
Format: | AT [cmds] &Dn [cmds] |
Description: | Selects modem response to DTR loss |
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 |
DL | Re-dial last number |
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 |
DW | Dialing resumed following dial tone detection |
D, | Dialing paused for amount of time specified in S8 register |
D! | Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook. |
D@ | Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string. |
D^ | 1300Hz calling tone enabled |
D; | return to command state after dialing |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] &Kn [cmds] |
Description: | Enables flow control options |
Command | Function |
&K0 | Flow control disabled |
&K3 | RTS/CTS flow control enabled |
&K4 | XON/XOFF flow control enabled |
&K5 | Transparent XON/XOFF flow control enabled |
PULSE DIALING RATIO | |
Type: | Configuration |
Format: | AT [cmds] &Pn [cmds] |
Description: | Selects pulse dial make/break ratio |
Command | Function |
&P0 | 39/61ms at 10pps (North America) |
&P1 | 33/67ms at 10pps (Europe) |
&P2 | 39/61ms at 20pps |
REPORT INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested |
Command | Function |
I0 | Reports product code |
I1 | Reports firmware checksum |
I2 | Tests and reports firmware checksum |
I3 | Reports firmware revision level |
I4 | Reports product capabilities |
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 in originate mode |
SOFT RESET | |
Type: | Immediate |
Format: | AT [cmds] Zn [cmds] |
Description: | Restores modem profiles previously saved in non-volatile RAM using the &W command. |
SPEAKER VOLUME | |
Type: | Configuration |
Format: | AT [cmds] Ln [cmds] |
Description: | Controls speaker volume |
Command | Function |
L0 | Low volume setting |
L1 | Low volume setting |
L2 | Medium volume setting |
L3 | Highest volume setting |
Extended AT Command Set
AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD | |
Type: | Configuration |
Format: | AT [cmds] %En [cmds] |
Description: | Controls auto-retrain mode and fallback/fall-forward |
Command | Function |
%E0 | Auto-retrain disabled |
%E1 | Auto-retrain enabled |
BREAK TYPE | ||
Type: | Configuration | |
Format: | AT [cmds] \Kn [cmds] | |
Description: | Configures action of break signal | |
Command | Function | |
\K0 | Online command mode enabled, send no break to remote modem | |
\K1 | Break sent to remote modem and buffered cleared | |
\K3 | Send break to remote modem immediately | |
\K5 | Send break with transmitted data | |
COMPRESSION | |
Type: | Configuration |
Format: | AT [cmds] %Cn [cmds] |
Description: | Selects data compression |
Command | Function |
%C0 | Data compression disabled |
%C1 | Data compression enabled |
COMPRESSION MODE | |
Type: | Configuration |
Format: | AT [cmds] %Mn [cmds] |
Description: | Selects data compression mode |
Command | Function |
%M0 | Compression disabled |
%M1 | Transmit only |
%M2 | Receive only |
%M3 | Transmit/receive compression enabled |
CONNECT MODE | |
Type: | Configuration |
Format: | AT [cmds] \Nn [cmds] |
Description: | Controls the type of connection the modem will operate in |
Command | Function |
\N0 | Normal mode enabled |
\N1 | Direct mode enabled |
\N2 | Reliable mode enabled |
\N3 | Auto-reliable mode enabled |
DICTIONARY SIZE | |
Type: | Configuration |
Format: | AT [cmds] %Dn [cmds] |
Description: | Selects data compression |
Command | Function |
%D0 | 512 bytes |
%D1 | 1024 bytes |
%D2 | 2048 bytes |
%D3 | 4096 bytes |
ECHO DATA | |
Type: | Configuration |
Format: | AT [cmds] \En [cmds] |
Description: | Enables modem to echo received data |
Command | Function |
\E1 | One shot optimization |
S(status) -REGISTERS
SPEED BUFFER LOWER LIMT | |
Type: | Register |
Format | AT [cmds] S49=n [cmds] |
Range: | 1-255 |
Unit: | Unidentified |
Description: | Sets speed buffer lower limit. Default=8. |
SPEED BUFFER UPPER LIMT | |
Type: | Register |
Format | AT [cmds] S50=n [cmds] |
Range: | 1-255 |
Unit: | Unidentified |
Description: | Sets speed buffer lower limit. Default=255. |