XIRCOM, INC.

CEM-33BC

Card Type                    Modem (asynchronous), Ethernet
Chipset                      Unidentified
Maximum Onboard Memory       64KB SRAM/256KB Flash RAM
Boot ROM                     Not available
Network Transfer Rate        10Mbps
Topology                     Linear Bus/Star
Wire Type                    RG-58A/U 50ohm coaxial

                             Unshielded twisted pair
Maximum Data Rate            33.6Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation              Bell 212A

                             ITU-T V.22, V.22bis, V.23, V.32, V.32bis,
                             V.34

                             AT&T V.32terbo
Fax Modulation               ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     PCMCIA Type II

[Image]

                                CONNECTIONS

         Function             Label            Function            Label

  MAM connector to PCMCIA      CN1     RG-58A/U 50ohm coaxial       CN4
  card                                 connector

  Telephone line out           CN2     MAM connector to PCMCIA      CN5
                                       card

  MAM connector to PCMCIA      CN3     UTP connector                CN6
  card

            Note: Either the MAM with CN4 or with CN6 may be used at one
            time.

                             DIAGNOSTIC LED(S)

    LED            Color           Status              Condition

    LED1       Unidentified          On         Card is transmitting or
                                                receiving data over the
                                                         modem

    LED1       Unidentified         Off       Card is not transmitting or
                                                receiving data over the
                                                         modem

    LED2       Unidentified          On         Carrier signal detected

    LED2       Unidentified         Off       Carrier signal not detected

    LED3       Unidentified          On         Card is transmitting or
                                                  receiving data over
                                                       Ethernet

    LED3       Unidentified         Off       Card is not transmitting or
                                                  receiving data over
                                                       Ethernet

    LED4       Unidentified          On               Power is on

    LED4       Unidentified         Off              Power is off

    LED5       Unidentified          On         Card is transmitting or
                                                  receiving data over
                                                       Ethernet

    LED5       Unidentified         Off       Card is not transmitting or
                                                  receiving data over
                                                       Ethernet

    LED6       Unidentified          On       Network connection is good

    LED6       Unidentified         Off          Network connection is
                                                        broken

                        SUPPORTED STANDARD COMMANDS

                             Basic AT Commands

  +++, A/

  A, D, E, H, M, N, P, Q, T, V, W, X, Y, Z

  &C, &D, &F, &G, &K, &P, &S, &V, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \C, \G, \K, \N, \Q, \T, \U, \V, \X, \Y, \Z

  %A, %C, %E, %G

                            Special AT Commands

  -C, "H, -J, "O

                                S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S25, S30, S46, S82,
  S95, S108

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

      See document XIRCOM, INC. CEM-33BTMD for a full command summary.