CARDINAL TECHNOLOGIES,INC.

2400V42 (EXTERNAL), 2450V42 (EXTERNAL)

Card Type                    Modem (asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            2400bps
Data Bus                     External
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis
Error Correction/Compression MNP5, V.42, V.42bis

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                                CONNECTIONS

        Function           Label             Function              Label

  Line in                       CN1      RS-232/422                 CN3

  Line out                      CN2      DC power                   CN4

                        USER CONFIGURABLE SETTINGS

                 Setting                       Label          Position

  Dumb mode enabled                        P7/Pins 1 & 2       Closed

  Smart mode enabled                       P7/Pins 2 & 3       Closed

                             DIAGNOSTIC LED(S)

    LED       Color      Status                   Condition

    V42       Green        On                 Modem using V.42

    V42       Yellow       On                Modem using V.42bis

    V42        Red         On               A data error occurred

    MNP       Green        On               Modem using MNP1 - 4

    MNP       Yellow       On                 Modem using MNP5

    MNP        Red         On               A data error occurred

    HS        Green        On          Modem is operating at 2400bps or
                                                   faster

    AA        Green        On                Auto-answer enabled

    AA        Green      Blinking             Phone is ringing

   OH/CD      Yellow       On          Modem is off-hook/carrier signal
                                                  detected

   OH/CD       Red         On        Modem is of-hook/carrier signal not
                                                  detected

    SD        Green      Blinking        Modem is transmitting data

    RD        Green      Blinking          Modem is receiving data

   MR/TR      Green        On           Power is on/DTR signal is low

   MR/TR      Yellow       On          Power is on/DTR signal is high

   MR/TR      Green      Blinking             Test mode enabled

   MR/TR      Yellow     Blinking             Test mode enabled

                         Proprietary AT Command Set

               See document V2279 for a full command summary.