ASPEN TECHNOLOGIES, INC.
28IDSSA, 28ISSA
Card Type |
Modem (asynchronous) |
Chipset |
Sierra |
I/O Options |
Microphone in, speaker out, voice |
Maximum Data Rate |
28.8Kbps |
Maximum Fax Rate |
14.4Kbps |
Data Modulation |
Bell 103A, 212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis, V.34 |
Fax Modulation |
Unidentified |
Error Correction/Compression |
MNP5, V.42, V.42bis |
Fax Class |
Class I & II |
Data Bus |
16-bit ISA |
Card Size |
Full height, half length |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
Telephone line |
CN1 |
Microphone in or speaker out |
CN3 |
Telephone line |
CN2 |
Microphone in or speaker out |
CN4 |
Note: It is not identified which of CN3 and CN4 is the microphone in jack and which is the speaker out jack. |
USER CONFIGURABLE SETTINGS | ||
Setting |
Label |
Position |
Audio volume set to high setting |
JP4 |
Closed |
Audio volume set to low setting |
JP4 |
Open |
Audio jacks are stereo |
JP5 |
Closed |
Audio jacks are monaural |
JP5 |
Open |
SUPPORTED STANDARD COMMANDS |
Basic AT Commands |
+++, comma, A/ |
A, D, E, H, L, M, O, P, Q, T, V, X, Y, Z |
&C, &D, &F, &T, &V, &W, &Y, &Z |
Extended AT Commands |
\Q |
%A, %C, %Q |
S-Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S18, S25, S26, S38 |
Note: See MHI help file for complete information. |
UNIDENTIFIED COMMANDS | |
Command |
Default |
S40 |
Unidentified |
S41 |
Unidentified |
Proprietary AT Command Set
ANSWER MODE | |
Type: |
Configuration |
Format: |
AT [cmds] %On [cmds] |
Description: |
Selects when the modem will be in answer mode. |
Command |
Function |
%O0 |
Modem automatically enters answer mode when line rings. |
%O1 |
Modem is always in answer mode. |
%O2 |
Modem auto-answers calls in originate mode. |
AUTO-FALLBACK/FALL-FORWARD | |
Type: |
Configuration |
Format: |
AT [cmds] &An [cmds] |
Description: |
Controls auto-fallback/fall-forward mode. |
Command |
Function |
&A0 |
Auto-fallback/fall-forward disabled. |
&A1 |
Auto-fallback/fall-forward enabled. |
AUTO-RELIABLE TIME BUFFER CONFIGURATION | |
Type: |
Configuration |
Format: |
AT [cmds] \Cn [cmds] |
Description: |
Controls the handling of incoming data during the auto-reliable negotiation time period. |
Command |
Function |
\C0 |
Data is discarded. |
\C1 |
Data is buffered for 4 seconds or 200 characters. |
í \C2 |
Data is discarded; modem returns to normal mode on receiving auto-reliable fallback character. |
\C3 |
Data is buffered for 4 seconds or 200 characters. Modem uses V.14 to fall back to normal mode. |
\C4 |
Data is discarded; modem returns to normal mode on receiving auto-reliable fallback character. Modem uses V.14 to fall back to normal mode. |
BREAK TYPE | |
Type: |
Configuration |
Format: |
AT [cmds] \Kn [cmds] |
Description: |
Configures action of break signal. |
Command |
Function |
\K0 |
Break sent to remote modem immediately and buffers cleared. |
\K1 |
Break sent to remote modem immediately and buffers not cleared. |
\K2 |
Break sent with transmitted data. |
\K3 |
Breaks ignored. |
\K4 |
Break sent with transmitted data until no break character is detected. |
\K5 |
Break sent with transmitted data until no break character is detected. |
CHARACTER ABORT | |
Type: |
Configuration |
Format: |
AT [cmds] %Kn [cmds] |
Description: |
Selects the character abort function. |
Command |
Function |
%K0 |
Character abort enabled with 2 second delay. |
%K1 |
Character abort disabled. |
CONNECT MODE | |
Type: |
Configuration |
Format: |
AT [cmds] \Nn [cmds] |
Description: |
Controls the type of connection the modem will make. |
Command |
Function |
\N0 |
Normal mode enabled. |
\N1 |
Direct mode enabled. |
\N2 |
MNP reliable mode enabled. |
í \N3 |
Auto-reliable mode or MNP auto-reliable mode enabled. |
\N4 |
V.42 reliable mode enabled. |
\N5 |
V.42 auto-reliable mode or MNP auto-reliable mode enabled. |
\N6 |
V.13 half-duplex simulation mode enabled. |
DATA FORMAT | |
Type: |
Configuration |
Format: |
AT [cmds] \Bn [cmds] |
Description: |
Selects the data size and parity the modem will use if no AT command is sent for it to auto-detect. |
Command |
Function |
\B0 |
6 data bits, no parity, 1 stop bit. |
\B1 |
7 data bits, no parity, 1 stop bit. |
\B2 |
7 data bits, 1 stop bit, parity type set by \P command. |
\B3 |
8 data bits, no parity, 1 stop bit. |
\B4 |
7 data bits, 2 stop bits, parity type set by \P command. |
\B5 |
8 data bits, 1 stop bit, parity type set by \P command. |
DATA PARITY | |
Type: |
Configuration |
Format: |
AT [cmds] \Pn [cmds] |
Description: |
Selects the parity of the local serial port data. |
Command |
Function |
\P0 |
Even parity selected. |
\P1 |
SPACE parity selected. |
\P2 |
Odd parity selected. |
\P3 |
Mark parity selected. |
\P4 |
Auto-detect parity from last entered AT command. |
DISPLAY INFORMATION | |
Type: |
Immediate |
Format: |
AT [cmds] In [cmds] |
Description: |
Displays information requested about the modem. |
Command |
Function |
I0 |
Displays product identification code. |
I3 |
Displays firmware revision. |
I4 |
Displays modem configuration. |
DSR SIGNAL | |
Type: |
Configuration |
Format: |
AT [cmds] &Sn [cmds] |
Description: |
Controls the behaviour of the DSR signal. |
Command |
Function |
í &S0 |
DSR forced high except at disconnect. |
&S1 |
DSR normal. |
&S2 |
DSR follows DCD. |
&S3 |
DSR forced high. |
DSR SIGNAL - TEST MODE | |
Type: |
Configuration |
Format: |
AT [cmds] %Dn [cmds] |
Description: |
Controls the behaviour of the DSR signal when the modem is in analog loopback test mode. |
Command |
Function |
%D0 |
DSR forced high. |
í %D1 |
DSR forced low. |
DTR DIALING | |
Type: |
Configuration |
Format: |
AT [cmds] %Zn [cmds] |
Description: |
Selects the the modem's reaction to the DTR signal going high. |
Command |
Function |
%Z0 |
DTR dialing disabled. |
%Z1 |
Modem will dial stored number. |
%Z2 |
Modem will go off-hook and attempt to connect. |
EXTENDED RESULT CODES | |
Type: |
Configuration |
Format: |
AT [cmds] \Vn [cmds] |
Description: |
Selects error correction and compression extended result codes. |
Command |
Function |
\V0 |
Modem returns CONNECT message after connecting and PROTOCOL: message after the link is negotiated; modem returns DCE rate. |
\V1 |
Modem returns CONNECT and PROTOCOL: messages after the link is negotiated; modem returns DTE rate. |
\V2 |
Modem returns CONNECT /REL message after the link is negotiated; modem returns DTE rate. |
í \V3 |
Error correction and compression extended result codes disabled; modem returns DCE rate for normal connections and DTE rate for error correcting connections. |
FLOW CONTROL - MODEM TO MODEM | |
Type: |
Configuration |
Format: |
AT [cmds] \Gn [cmds] |
Description: |
Selects modem-to-modem flow control. |
Command |
Function |
í \G0 |
Flow control disabled. |
\G1 |
Flow control enabled. |
\G2 |
Flow control enabled on transmit only. |
\G3 |
Pass-through flow control enabled. |
LOCAL SERIAL PORT SPEED | |
Type: |
Configuration |
Format: |
AT [cmds] \Tn [cmds] |
Description: |
Sets the speed of the local serial port. |
Command |
Function |
\T0 |
Auto-detect current serial port speed. |
í \T1 |
Set speed to speed of last AT command. |
\T2 |
Set speed to 300bps. |
\T3 |
Set speed to 1200bps. |
\T4 |
Set speed to 2400bps. |
\T5 |
Set speed to 4800bps. |
\T6 |
Set speed to 7200bps. |
\T7 |
Set speed to 9600bps. |
\T8 |
Set speed to 12Kbps. |
\T9 |
Set speed to 14.4Kbps. |
\T10 |
Set speed to 16.8Kbps. |
\T11 |
Set speed to 19.2Kbps. |
\T12 |
Set speed to 21.6Kbps. |
\T13 |
Set speed to 24Kbps. |
\T14 |
Set speed to 26.4Kbps. |
\T15 |
Set speed to 28.8Kbps. |
\T16 |
Set speed to 38.4Kbps. |
\T17 |
Set speed to 57.6Kbps. |
\T18 |
Set speed to 76.8Kbps. |
\T19 |
Set speed to 115.2Kbps. |
\T20 |
Set speed to 128Kbps. |
LOCAL SERIAL PORT SPEED - CONNECT MESSAGES | |
Type: |
Configuration |
Format: |
AT [cmds] %Rn [cmds] |
Description: |
Sets the speed at which the modem will send CONNECT messages. |
Command |
Function |
%R0 |
Auto-detect current serial port speed. |
í %R1 |
Send messages at speed of last AT command. |
%R2 |
Send messages at 300bps. |
%R3 |
Send messages at 1200bps. |
%R4 |
Send messages at 2400bps. |
%R5 |
Send messages at 4800bps. |
%R6 |
Send messages at 7200bps. |
%R7 |
Send messages at 9600bps. |
%R8 |
Send messages at 12Kbps. |
%R9 |
Send messages at 14.4Kbps. |
%R10 |
Send messages at 16.8Kbps. |
%R11 |
Send messages at 19.2Kbps. |
%R12 |
Send messages at 21.6Kbps. |
%R13 |
Send messages at 24Kbps. |
%R14 |
Send messages at 26.4Kbps. |
%R15 |
Send messages at 28.8Kbps. |
%R16 |
Send messages at 38.4Kbps. |
%R17 |
Send messages at 57.6Kbps. |
%R18 |
Send messages at 76.8Kbps. |
%R19 |
Send messages at 115.2Kbps. |
%R20 |
Send messages at 128Kbps. |
OVERSPEED CORRECTION | |
Type: |
Configuration |
Format: |
AT [cmds] \An [cmds] |
Description: |
Selects the amount of overspeed correction the modem will use. |
Command |
Function |
í \A0 |
Select 1.25% overspeed correction. |
\A1 |
Select 2.5% overspeed correction. |
PROTOCOL/SPEED | |
Type: |
Configuration |
Format: |
AT [cmds] &Hn [cmds] |
Description: |
Selects the protocol and speed the modem will attempt to connect at |
Command |
Function |
&H0 |
Auto-detect fastest common protocol. |
&H1 |
Select V.34 only. |
&H2 |
Select V.32bis or below. |
&H3 |
Select V.32bis only. |
&H4 |
Select V.32 or below. |
&H5 |
Select V.32 only. |
&H6 |
Select V.22bis or below. |
&H7 |
Select V.22 only. |
&H8 |
Select Bell 212A only. |
&H9 |
Select Bell 103A only. |
&H10 |
Select V.21 only. |
RETRAIN MODE | |
Type: |
Configuration |
Format: |
AT [cmds] %Qn [cmds] |
Description: |
Selects the modem's reaction to a poor quality connection. |
Command |
Function |
%Q0 |
Modem will not retrain. |
%Q1 |
Modem will retrain up to three times, then it will disconnect if line quality is still to poor to support connection. |
%Q2 |
Modem will retrain until line quality is good enough to support connection. |
RETRANSMISSION MAXIMUM | |
Type: |
Register |
Format: |
AT [cmds] S70=n [cmds] |
Description: |
Sets the maximum number of times that the modem will retransmit a packet due to errors before the modem will hang up. |
RTS SIGNAL | |
Type: |
Configuration |
Format: |
AT [cmds] &Rn [cmds] |
Description: | |
Command |
Function |
&R0 |
RTS normal in asynchronous connect mode and forced high in asynchronous command mode. In synchronous mode, RTS follows CTS with delay set by S26 command. |
í &R1 |
RTS normal in connect mode, forced high in asynchronous command mode. |
&R2 |
RTS normal. |
&R3 |
RTS forced high. |
TRELLIS CODING | ||
Type: |
Configuration | |
Format: |
AT [cmds] &Un [cmds] | |
Description: |
Selects whether the modem will use trellis coding. | |
Command |
Function | |
í &U0 |
Trellis coding enabled. | |
&U1 |
Trellis coding disabled. |