ASPEN TECHNOLOGIES, INC.

28.8FX3

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     8-bit ISA
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, V.34

                             Rockwell V.FC
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       Line in                    CN2

          BASE I/O ADDRESS SELECTION

      Port           JP1/F          JP1/G

  COM1: (3F8h)      Closed          Closed

  COM2: (2F8h)      Closed           Open

  COM3: (3E8h)       Open           Closed

  COM4: (2E8h)       Open            Open

               INTERRUPT SELECTION

   IRQ      JP1/B     JP1/C    JP1/D     JP1/E

    3       Open      Open     Closed     Open

    4       Open      Open      Open     Closed

    5       Open     Closed     Open      Open

    7      Closed     Open      Open      Open

  FACTORY CONFIGURED SETTINGS

     Switch         Setting

     JP1/A            Off

                         Proprietary AT Command Set

               See document V1535 for a full command summary.