
CARDINAL TECHNOLOGIES,INC.

2400V42 (INTERNAL), 2450V42 (INTERNAL)

Card Type                    Modem (asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            2400bps
Data Bus                     8-bit ISA
Data Modulation Protocol     Bell 103/212A

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

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Line out/in                    CN1       Line in/out              CN2

                            SERIAL PORT ADDRESS

   Setting       IRQ       SW1/A        SW1/B       SW1/C        SW1/D

  COM1 (3F8h)     4        Closed      Closed       Closed        Open

  COM2 (2F8h)     3         Open       Closed        Open        Closed

  COM3 (3E8h)     4        Closed       Open        Closed        Open

  COM4 (2E8h)     3         Open        Open         Open        Closed

              INTERRUPT SELECTION

        Setting                   P3

           2               Pins 2 & 3 closed

           5               Pins 1 & 2 closed

  Disabled IRQ2 & IRQ5           Open

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, Comma, A/

  A, B, E, H, L, M, O, Q, S, V, X, Y, Z,

  &C, &D, &F, &G, &L, &P, &S, &T, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \C, \G, \J, \L, \O, \U, \X, \Y, \Z

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S25,
  S26, S37

                             Special Commands

  "H, "O

  Note: Please see MHI Help file for full command documentation.

                         Proprietary AT Command Set

                     AUTO-RELIABLE FALLBACK CHARACTER

  Type:            Configuration

  Format:          AT [cmds] %An [cmds]

  Default:         Unidentified

  Range:           0-127

  Unit:            ASCII

  Description:     Sets the character used as the auto-reliable fallback
                   character

  Note:            AT%A0 will disable this function.

      BIT MAPPED REGISTERS

    Register        Default

      S14        Unidentified

      S20             16

      S21        Unidentified

      S22        Unidentified

      S23        Unidentified

      S27        Unidentified

      S100       Unidentified

                                 BREAK TYPE

  Type:                  Configuration

  Format:                AT [cmds] \Kn [cmds]

  Description:           Configures action of break signal

   Command      Break from DTE     Break from       Break          Modem
                                      DTE          received     receives \B
                Reliable/Normal                  from remote
                     mode         Direct mode       modem

     \K0        Online command    Online         Buffers        Break sent
                mode enabled,     command mode   cleared,       to remote
                send no break     enabled,       break sent     modem and
                to remote modem   send break     to DTE         buffers
                                  to remote                     cleared
                                  modem
                                  immediately

     \K1        Break sent to     Send break     Buffers        Break sent
                remote modem      to remote      cleared,       to remote
                and buffers       modem          break sent     modem and
                cleared           immediately    to DTE         buffers
                                                                cleared

     \K2        Online command    Online         Break sent     Send break
                mode enabled,     command mode   immediately    to remote
                send no break     enabled,       to DTE         modem
                to remote modem   send break                    immediately
                                  to remote
                                  modem
                                  immediately

     \K3        Send break to     Send break     Break sent     Send break
                remote modem      to remote      immediately    to remote
                immediately       modem          to DTE         modem
                                  immediately                   immediately

     \K4        Online command    Online         Break sent     Send break
                mode enabled,     command mode   with           with
                send no break     enabled,       received       transmitted
                to remote modem   send break     data to the    data
                                  to remote      DTE
                                  modem
                                  immediately

     \K5        Send break with   Send break     Break sent     Send break
                transmitted       to remote      with           with
                data              modem          received       transmitted
                                  immediately    data to the    data
                                                 DTE

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Cn [cmds]

  Description:   Selects MNP5 data compression

    Command                              Function

      %C0        MNP5 disabled

      %C1        MNP5 enabled

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Description:   Controls the type of connection the modem will operate
                 in

    Command                              Function

      \N0        Normal mode enabled

      \N1        Direct mode enabled

      \N2        MNP reliable mode enabled

      \N3        Auto-reliable mode enabled

      \N4        V.42 reliable mode enabled

                                   DIAL

  Type:                  Immediate

  Format:                AT [cmds] D<#> [cmds]

  Description:           Dials telephone number according to any
                         modifiers included in the string

  Note:                  Any combination of modifiers can be used to
                         produce the desired dial functions in sequence.

        Modifier                             Function

           P             Pulse dialing enabled

           R             Answer mode enabled, originate mode disabled
                         following handshake initiation

           Sn            Dial stored telephone number n

           T             Tone dialing enabled

           W             Dialing resumed following dial tone detection

           ,             Dialing paused for amount of time specified in
                         S8 register

           !             Modem commanded to go off-hook for specified
                         time before returning on-hook

           @             Wait for quiet answer

           ;             Modem returned to command state after dialing

                           DISPLAY CONFIGURATION

  Type:          Immediate

  Format:        AT [cmds] \S [cmds]

  Description:   Displays current modem settings

                           EXTENDED RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] \Vn [cmds]

  Description:   Select standard or extended result codes

    Command                              Function

      \V0        Standard result codes enabled

      \V1        Extended MNP result codes enabled

      \V2        Extended V.42 and MNP result codes enabled

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] \Qn [cmds]

  Description:   Sets type of flow control used by modem

    Command                              Function

      \Q0        Flow control disabled

      \Q1        XON/XOFF flow control enabled

      \Q2        CTS flow control by DCE enabled

      \Q3        RTS/CTS flow control enabled

                             INACTIVITY TIMER

  Type:                  Configuration

  Format:                AT [cmds] \Tn [cmds]

  Default:               0

  Range:                 0-90

  Unit:                  1 minute

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

  Note:                  AT\T0 will disable timer.

                                LINE SPEED

  Type:          Configuration

  Format:        AT [cmds] %Nn [cmds]

  Description:   Controls maximum DCE line speed

    Command                              Function

      %N0         Enable maximum DCE speed

      %N1         Maximum DCE speed set to 300bps

      %N2         Maximum DCE speed set to 300bps

      %N3         Maximum DCE speed set to 300bps

      %N5         Maximum DCE speed set to 1200bps

      %N6         Maximum DCE speed set to 2400bps

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports modem code

       I1        Reports ROM checksum

       I2        Tests and reports ROM checksum

       I3        Reports version information

                        V.42/MNP - DETECTION PHASE

  Type:          Configuration

  Format:        AT [cmds] -Jn [cmds]

  Description:   Controls V.42/MNP detection

    Command                              Function

      -J0        V.42 detection disabled

      -J1        V.42 detection enabled, then MNP detection

      -J2        MNP detection enabled, then LAPM detection

                         V.42bis - DICTIONARY SIZE

  Type:          Configuration

  Format:        AT [cmds] "Nn [cmds]

  Default:       Unidentified

  Range:         512-1024

  Unit:          Strings

  Description:   Select V.42 dictionary size

