ASPEN TECHNOLOGIES, INC.

PCMCIA FAX/MODEM 14.4

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            14.48Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     PCMCIA type II
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

                                                                      V1539

                         Proprietary AT Command Set

               See document V1535 for a full command summary.