
ASPEN TECHNOLOGIES, INC.

14.4EFX

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     External
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32,
                             V.32bis
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis

[Image]

                                CONNECTIONS

         Purpose             Location          Purpose           Location

  Line out                     CN1       DC power                  CN4

  Line in                      CN2       Power switch              SW1

  RS-232/422                   CN3

                             DIAGNOSTIC LED(S)

    LED         Color         Status                 Condition

     MR          Red            On                  Power is on

     MR          Red            Off                 Power is off

     TR          Red            On               DTR signal is high

     TR          Red            Off              DTR signal is low

     SD          Red         Blinking        Modem is transmitting data

     SD          Red            Off        Modem is not transmitting data

     RD          Red         Blinking         Modem is receiving data

     RD          Red            Off         Modem is not receiving data

     OH          Red            On               Modem is off-hook

     OH          Red            Off               Modem is on-hook

     CD          Red            On            Carrier signal detected

     CD          Red            Off         Carrier signal not detected

     AA          Red            On              Auto-answer enabled

     AA          Red            Off             Auto-answer disabled

     AA          Red         Blinking             Phone is ringing

     HS          Red         Blinking         Modem is in test mode or
                                                 detected an error

     HS          Red            On          Modem is operating at 9600bps
                                                     or faster

     HS          Red            Off         Modem is not operating faster
                                                    than 9600bps

                         Proprietary AT Command Set

                           ACCEPT RELIABLE MODE

  Type:          Immediate

  Format:        AT [cmds] \U [cmds]

  Example:       AT \U B1<CR>

  Description:   Accepts remote modems request for reliable link.

                               AUTO-RETRAIN

  Type:          Configuration

  Format:        AT %En

  Example:       AT %E1 <CR>

  Description:   Selects auto-retrain mode.

  Command                                Function

   %E0          Auto-retrain disabled.

  %E1            Auto-retrain enabled.

      BTI-MAPPED REGISTERS

    Register        Default

      S14        Unidentified

      S21        Unidentified

      S22        Unidentified

      S23        Unidentified

      S27        Unidentified

      S40             57

      S41              1

                                BREAK SEND

  Type:          Configuration

  Format:        AT [cmds] \Bn [cmds]

  Example:       AT \B3 &W<CR>

  Default:       3

  Range:         1-9

  Unit:          .1 second

  Description:   Sends break to modem.

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] \Kn [cmds]

  Example:       AT \K5 <CR>

  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]

  Example:       AT %C1 <CR>

  Description:   Selects data compression.

  Command                                Function

  %C0            Data compression disabled.

   %C1          Data compression enabled.

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Mn [cmds]

  Example:       AT %M3 <CR>

  Description:   Selects data compression.

  Command                                Function

  %M0            Data compression disabled.

  %M1            Data compression enabled on transmit only.

  %M2            Data compression enabled on receive only.

   %M3          Data compression enabled.

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Example:       AT \N1 DT555-1212<CR>

  Description:   Sets connect mode.

  Command                                Function

  \N0            Normal mode enabled.

  \N1            Direct mode enabled.

  \N2            Reliable mode enabled.

   \N3          Auto-reliable mode enabled.

                         CONVERT TO RELIABLE MODE

  Type:          Immediate

  Format:        AT [cmds] \Y [cmds]

  Example:       AT \Y<CR>

  Description:   Initiates reliable mode link.

                             ECHO OPTIMIZATION

  Type:          Immediate

  Format:        AT [cmds] \En [cmds]

  Example:       AT \E1 <CR>

  Description:   Enables modem echo optimization.

    Command                              Function

      \E1        One shot optimization enabled.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] \Gn [cmds]

  Example:       AT \G0 &K3<CR>

  Description:   Selects modem port flow control.

  Command                                Function

   \G0          Flow control disabled.

  \G1            Flow control enabled.

                             INACTIVITY TIMER

  Type:             Configuration

  Format:           AT [cmds] \Tn [cmds]

  Example:          AT\T0<CR>

  Default:          0

  Range:            0-90

  Unit:             1 minute

  Description:      Sets the length of time that the modem does not
                    receive information before it disconnects.

                             LINE SIGNAL LEVEL

  Type:          Immediate

  Format:        AT [cmds] %L [cmds]

  Example:       AT %L &W<CR>

  Description:   Returns recieved line signal level.

                    MAXIMUM BLOCK SIZE FOR TRANSMISSION

  Type:          Configuration

  Format:        AT [cmds] \An [cmds]

  Example:       AT \A2 &MB28800<CR>

  Description:   Sets the maximum transmittable block size.

  Command                                Function

  \A0            Maximum MNP block size is 64 characters.

  \A1            Maximum MNP block size is 128 characters.

   \A2          Maximum MNP block size is 192 characters.

  \A3            Maximum MNP block size is 256 characters.

                           MNP STREAM/BLOCK MODE

  Type:          Configuration

  Format:        AT [cmds] \Ln [cmds]

  Example:       AT \L1 DT555-1212<CR>

  Description:   Selects the transfer mode for MNP.

  Command                                Function

  \L0            Stream mode for MNP enabled.

   \L1          Block mode for MNP enabled.

                         ON-LINE IN RELIABLE MODE

  Type:          Immediate

  Format:        AT [cmds] \O

  Example:       AT \O <CR>

  Description:   Returns to on-line and requests reliable mode
                 connection.

                           REPORT SIGNAL QUALITY

  Type:          Immediate

  Format:        AT [cmds] %Q [cmds]

  Example:       AT %Q &W<CR>

  Description:   Reports signal quality.

                            SWITCH TO MNP MODE

  Type:          Immediate

  Format:        AT [cmds] \Z [cmds]

  Example:       AT \Z &W<CR>

  Description:   Switches to normal mode from MNP mode.

                                TEST MODES

  Format                  AT [cmds] S16=n [cmds]

  Example:                ATS16=0<CR>

  Default:                0

  Range:                  0-125

  Unit:                   Bit-mapped

  Description:            Controls loopback tests, analog, digital,
                          remote digital, and self tests.

      Bit         Value                        Function

       0             0       Local analog loopback not in progress.

                    1        Local analog loopback in progress.

       1            0        Not used.

       2             0       Local digital loopback not in progress.

                    1        Local digital loopback in progress.

       3             0       Modem not in remote digital loopback.

                    1        Remote digital loopback in progress.

       4             0       Remote digital loopback not requested.

                    1        Remote digital loopback requested.

       5             0       Remote digital loopback w/ self-test not in
                             progress.
                    1
                             Remote digital loopback w/ self-test in
                             progress.

       6             0       Local analog loopback w/ self-test not in
                             progress.
                    1
                             Local analog loopback w/ self-test in
                             progress.

                         V.42bis DICTIONARY CLEAR

  Type:          Immediate

  Format:        AT [cmds] %P [cmds]

  Example:       AT %P &W<CR>

  Description:   Clears V.42bis dictionary.

                          V.42bis DICTIONARY SIZE

  Type:          Configuration

  Format:        AT [cmds] %Dn [cmds]

  Example:       AT %D2 &W<CR>

  Description:   Controls V.42bis dictionary size.

  Command                                Function

  %D0            512 bytes.

  %D1            1024 bytes.

   %D2          2048 bytes

  %D3            4096 bytes (one way compression only)

                       V.42bis MAXIMUM STRING LENGTH

  Type:          Configuration

  Format:        AT [cmds] %Sn [cmds]

  Example:       AT %S32 <CR>

  Default:       32

  Range:         6 - 64

  Unit:          Unidentified

  Description:   Selects string size for V.42bis compression.

