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 [Image] CONNECTIONS Function Label Function Label Telephone line CN1 Microphone in or CN3 speaker out Telephone line CN2 Microphone in or CN4 speaker out 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. \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. \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 &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. %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. \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 \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. \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. %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 \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. &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 &U0 Trellis coding enabled. &U1 Trellis coding disabled.