
CARDINAL TECHNOLOGIES, INC.

CONNECTA 33.6K INTERNAL FAX MODEM (2420)

Card Type                      Modem (synchronous/asynchronous)
Chip Set                       TI
Maximum Modem Rate             33.6Kbps
Maximum Fax Rate               14.4Kbps
Data Modulation Protocol       Bell 103A/212A, ITU-T V.21, V.22, V.22bis,
                               V.23, V.32, V.32bis, V.34,
Fax Modulation Protocol        ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression   MNP5, V.42, V.42bis
Fax Class                      Class I
Data Bus                       8-bit ISA
Card Size                      Half-length, half-height card

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Line in                         CN1       Line out                CN2

                           PLUG & PLAY SELECTION

  Setting     JP1     JP2    JP3     JP4     JP5     JP6     JP7     JP8

   Plug &    Open    Open    Open    Open    Open    Open   Open    Open
    Play

                    SERIAL PORT ADDRESS

    Setting         JP1            JP2            JP3

  COM1 (3F8h)      Closed         Closed        Closed

  COM2 (2F8h)       Open          Closed        Closed

  COM3 (3E8h)      Closed          Open         Closed

  COM4 (2E8h)       Open           Open         Closed

                             INTERRUPT

  Setting      JP4        JP5        JP6         JP7        JP8

     2       Closed       Open       Open       Open       Open

     3        Open       Closed      Open       Open       Open

     4        Open        Open      Closed      Open       Open

     5        Open        Open       Open      Closed      Open

     7        Open        Open       Open       Open      Closed

                       MISCELLANEOUS TECHNICAL NOTES

  Note: The modem can be upgraded to 56Kbps via Flash ROM from Cardinal
  Technologies, Inc.

                         SUPPORTED COMMAND SET

                           Basic AT Commands

  AT, +++, A/

  A, B, E, F, H, M, O, P, T, V, X

  &G, &T, &W, &Z

                              S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S38



  Note: See MHI Help File for full command documentation.

                         PROPRIETARY AT COMMAND SET

                          ADDITIONAL RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] &An [cmds]

  Description:   Enables or disables additional result code subsets

    Command                              Function

      &A0        ARQ result codes disabled

      &A1        ARQ result codes enabled

      &A2        V.32 modulation indicator added

      &A3        Protocol indicators added

                              BREAK HANDLING

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Description:   Sets destructive/nondestructive break handling

    Command                              Function

      &Y0        Destructive break not sent

      &Y1        Expedited, destructive break sent

      &Y2        Expedited, non-destructive break sent

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR high only while modem is handshaking or connected

                       CONNECTION SPEED LOWER LIMIT

  Type:            Configuration

  Format:          AT [cmds] &Un [cmds]

  Description:     Sets slowest allowed connection speed if &N is set to
                   1 or higher.

     Command                              Function

       &U0         No minimum connect speed.

       &U1         Set minimum connect speed to 300bps.

       &U2         Set minimum connect speed to 1200bps.

       &U3         Set minimum connect speed to 2400bps.

       &U4         Set minimum connect speed to 4800bps.

       &U5         Set minimum connect speed to 7200bps.

       &U6         Set minimum connect speed to 9600bps.

       &U7         Set minimum connect speed to 12Kbps.

       &U8         Set minimum connect speed to 14.4Kbps.

       &U9         Set minimum connect speed to 16.8Kbps.

       &U10        Set minimum connect speed to 19.2Kbps.

       &U11        Set minimum connect speed to 21.6Kbps.

       &U12        Set minimum connect speed to 24Kbps.

       &U13        Set minimum connect speed to 26.4Kbps.

       &U14        Set minimum connect speed to 28.8Kbps.

       &U15        Set minimum connect speed to 31.2Kbps.

       &U16        Set minimum connect speed to 33.6Kbps.

                       CONNECTION SPEED UPPER LIMIT

  Type:                  Configuration

  Format:                AT [cmds] &Nn [cmds]

  Description:           Sets required connection speed if &U is set to
                         0; otherwise, sets fastest allowed connection
                         speed.

        Command                              Function

          &N0            No maximum connect speed.

          &N1            Fixed link rate of 300bps.

          &N2            Fixed link rate of 1200bps.

          &N3            Fixed link rate of 2400bps.

          &N4            Fixed link rate of 4800bps.

          &N5            Fixed link rate of 7200bps.

          &N6            Fixed link rate of 9600bps.

          &N7            Fixed link rate of 12Kbps.

          &N8            Fixed link rate of 14.4Kbps.

          &N9            Fixed link rate of 16.8Kbps.

          &N10           Fixed link rate of 19.2Kbps.

          &N11           Fixed link rate of 21.6Kbps.

          &N12           Fixed link rate of 24Kbps.

          &N13           Fixed link rate of 26.4Kbps.

          &N14           Fixed link rate of 28.8Kbps.

          &N15           Fixed link rate of 31.2Kbps.

          &N16           Fixed link rate of 33.6Kbps.

                         DATA CARRIER DETECT (DCD)

  Type:          Configuration

  Format:        AT [cmds] &Cn [cmds]

  Description:   Selects whether the DCD option is enabled or disabled

    Command                              Function

      &C0        DCD override enabled

      &C1        DCD enabled after carrier signal detected

                         DATA TERMINAL READY (DTR)

  Type:          Configuration

  Format:        AT [cmds] &Dn [cmds]

  Description:   Selects modem response to DTR

    Command                              Function

      &D0        DTR override

      &D1        DTR toggle causes online command mode

      &D2        Normal DTR operations

      &D3        Resets on receipt of DTR

                                   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.

        Command                              Function

          DL             Re-dial last number

          DP             Pulse dialing enabled

          DR             Answer mode enabled; originate mode disabled
                         following handshake initiation.

         DS=n            Dial stored telephone number n

          DT             Tone dialing enabled/Pulse dialing disabled

          DW             Dialing resumed following dial tone detection

          D,             Dialing paused for amount of time specified in
                         S8 register

        D"WXY"           Optional method of denoting telephone numbers.
                         Letters enclosed in quotes are interpreted as
                         numbers according to the system found on a
                         telephone keypad.

          D!             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D@             Wait for Quite Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by silence up to the time specified in
                         S7, is received prior to executing the rest of
                         the dial string.

          D/             Delays 125 ms. Before proceeding with dial
                         string

          D^             Calling tone enable/disable for current call
                         only

          D;             Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.

          D&             Waiting for AT&T "bong" tone

                                DISCONNECT

  Type:          Configuration

  Format:        AT [cmds] Yn [cmds]

  Description:   Commands disconnection configuration

    Command                              Function

       Y0        Profile 0 in NVRAM

       Y1        Profile 1 in NVRAM

                               ERROR CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Sets error control for connections at 1200bps and higher

    Command                                Mode

      &M0        Error control disabled

      &M1        Automatic selection of error control and non-error
                 control

      &M2        Enable error control link

      &M3        Speaker on until modem connects

      &M4        Normal/ARQ mode.

      &M5        ARQ mode

                          FACTORY DEFAULT PROFILE

  Type:             Configuration

  Format:           AT [cmds] &F [cmds]

  Description:      Sets values in active profile to values found in the
                    default profile

     Command                              Function

       &F0          Standard factory configuration

       &F1          Factory configuration1; hardware flow control
                    template

       &F2          Factory configuration 2; software flow control
                    template

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables/disables flow control

    Command                             Line Type

      &K0        Flow control disabled

      &K1        Hardware, RTS/CTS flow control enabled

      &K2        Software, XON/XOFF flow control enabled

      &K3        Transparent software, XON/XOFF flow control enabled

                                   HELP

  Type:          Immediate

  Format:        n$

  Description:   Displays help for commands.

    Command                              Function

       $         Display help screen for single letter AT commands

       &$        Display help screen for extended commands

       D$        Display help screen for dial commands

       S$        Display help screen for S-registers

                            PULSE DIALING RATIO

  Type:          Configuration

  Format:        AT [cmds] &Pn [cmds]

  Description:   Selects pulse dial make/break ratio

    Command                              Function

      &P0        39/61ms at 10pps (North America)

      &P1        33/67ms at 10pps (Europe)

                         RECEIVE DATA FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &In [cmds]

  Description:   Enables RD flow control options

    Command                              Function

      &I0        Software flow control disabled

      &I1        XON/XOFF signals passed through local modem

      &I2        XON/XOFF signals trapped by local modem

                          REPEAT PREVIOUS COMMAND

  Type:          Immediate

  Format:        A>

  Description:   Repeats previous command continuously.

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports four digit product code

       I1        Reports firmware checksum

       I2        Reports RAM checksum

       I3        Reports ID string

       I4        Reports current modem settings

       I5        Reports NVRAM settings

       I6        Reports data connection information

       I7        Reports manufacturer and model information

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] Qn [cmds]

  Description:   Enables modem to send result codes to the DTE

    Command                              Function

       Q0        Result code sending enabled

       Q1        Result code sending disabled

       Q2        Result code sending only in originate mode

                                    RTS

  Type:          Configuration

  Format:        AT [cmds] &Rn [cmds]

  Description:   Selects RTS/CTS options

    Command                              Function

      &R0        Reserved

      &R1        RTS ignored

      &R2        Received data to computer only on RTS

                             SERIAL PORT RATE

  Type:          Configuration

  Format:        AT [cmds] &Bn [cmds]

  Description:   Manages the serial port rate

    Command                              Function

      &B0        Serial speed follows connect speed

      &B1        Serial speed locked

      &B2        Fixed in ARQ mode, variable in non-ARQ mode

                                SOFT RESET

  Type:                Immediate

  Format:              AT [cmds] Zn [cmds]

  Description:         Restores modem profiles previously saved in
                       non-volatile RAM using the &W command.

       Command                              Function

          Z0           Restore setting to profile selected by ATY command

          Z1           Restore setting NVRAM profile 0

          Z2           Restore setting NVRAM profile 1

          Z3           Restores setting to factory default profile 0

          Z4           Restores setting to factory default profile 1

          Z5           Restores setting to factory default profile 2

                        TRANSMIT DATA FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Hn [cmds]

  Description:   Enables TD flow control options

    Command                              Function

      &H0        Flow control disabled

      &H1        CTS hardware flow control enabled

      &H2        Software flow control enabled

      &H3        Hardware and software flow control enabled

                            S(STATUS) -REGISTERS

                          BIT-MAPPED REGISTER S13

  Format:          AT [cmds] S13=n [cmds]

  Range:           0-174

  Unit:            Bit-mapped

  Description:     Controls reset, dial mode

   Bit    Value                           Function

    0          0   Unidentified

              1    Resets when DTR drops

    1          0   Unidentified

              1    Resets non-MNP transmit buffer from 1.5K to 128bytes

    2          0   Unidentified

              1    Sets backspace key to delete

    3          0   Unidentified

              1    On DTR signal, auto dials number stared at NVRAM
                   position 0

    4          0   Unidentified

              1    At power on/reset, auto dials number stared at NVRAM
                   position 0

    5          0   Enables V.32bis ASL mode

              1    Disables V.31bis ASL mode

    6          0   Enables quick retrains

              1    Disables quick retrains

    7       0 1    Unidentified

                   Disconnect on escape code

                          BIT-MAPPED REGISTER S15

  Format:          AT [cmds] S15=n [cmds]

  Unit:            Bit-mapped

  Description:     Disable/Enable MNP

   Bit    Value                           Function

    0          0   Enable ARQ/MNP for V.22

              1    Disable ARQ/MNP for V.22

    1          0   Enable ARQ/MNP for V.22bis

              1    Disable ARQ/MNP for V.22bis

    2          0   Enable ARQ/MNP for V.32/V.32bis/V.32terbo

              1    Enable ARQ/MNP for V.32/V.32bis/V.32terbo

    3          0   Enable MNP handshake

              1    Disable MNP handshake

    4          0   Enable MNP level 4

              1    Disable MNP level 4

    5          0   Enable MNP level 3

              1    Disable MNP level 3

    6          0   MNP compatibility

              1    MNP incompatibility

    7       0 1    Enable V.42 operation

                   Disable V.42 operation

                                TEST MODES

  Type:            Register

  Format:          AT [cmds] S16=n [cmds]

  Unit:            Bit-mapped

  Description:     Controls touch tone dialing test.

   Bit    Value                           Function

    0         0    Reserved

    1          0   Touch tone dialing test not in progress

              1    Touch tone dialing test in progress

    2          0   Test pattern generation not in progress

              1    Test pattern generation in progress

   3-7        0    Reserved

                             INACTIVITY TIMER

  Type:                  Register

  Format                 AT [cmds] S19=n [cmds]

  Unit:                  10 seconds

  Description:           Maximum duration of DTE and DCE inactivity
                         allowed prior to initiating hang-up process.

            Note: S19=0 disables the timer and allows indefinite
            inactivity.

                               BREAK LENGTH

  Type:           Register

  Format          AT [cmds] S21=n [cmds]

  Unit:           10ms

  Description:    Sets duration of breaks sent from the modem to the
                  computer

            Note: Applies to MNP or V.42 mode only.

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S22=n [cmds]

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XON

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

  Format:        AT [cmds] S23=n [cmds]

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF

                          BIT-MAPPED REGISTER S27

  Format                 AT [cmds] S27=n [cmds]

  Range:                 0-255

  Unit:                  Bit-mapped

  Description:           Enables/disables modulation protocols

   Bit        Value                         Function

    0                0   Disable ITU-T modulation at 300bps for overseas
                         calls: in V.21 mode, the modem answers both
                    1    overseas and domestic calls, but only originates
                         V.21 calls

                         Enable ITU-T modulation at 300bps for overseas
                         calls: in V.21 mode, the modem answers both
                         overseas and domestic calls, but only originates
                         V.21 calls

    1                0   Disable unencoded modulation in V.32 mode

                    1    Enable unencoded modulation in V.32 mode

    2                0   Enable V.32 modulation

                    1    Disable V.32 modulation

    3                0   Enable 2100Hz answer tone

                    1    Disable 2100Hz answer tone

    4                0   Disable V.23 fallback mode

                    1    Enable V.23 fallback mode

    5                0   Enable V.32bis mode

                    1    Disable V.32bis mode

    6               0    Reserved

    7             0 1    Enable codes

                         Disable codes and enters software compatibility
                         mode

                              CONNECTION TIME

  Type:          Register

  Format         AT [cmds] S28=n [cmds]

  Unit:          .1 second

  Description:   Sets V.32 duration

    Command                              Function

     S28=0       Eliminates the V.32 answer tone for a faster connection

     S28=8       Times are in .1 second

    S28=255      Disable connections except V.32 at 9600bps

                              FALLBACK TIMER

  Type:          Register

  Format         AT [cmds] S29=n [cmds]

  Range:         0-255

  Unit:          .01 second

  Description:   Sets the duration of the V.21 answer mode fallback timer

                          BIT-MAPPED REGISTER S32

  Format:            AT [cmds] S32=n [cmds]

  Range:             0-255

  Description:       Select setup for 28.8 and higher speed modems

     Bit        Value                       Function

      0              0  Disable V.8 call indicate

                    1   Enable V.8 call indicate

      1              0  Disable V.8 mode

                    1   Enable V.8 mode

      2              0  Enable V.FC modulation

                    1   Disable V.FC modulation

      3              0  Enable V.34 modulation

                    1   Disable V.34 modulation

      4              0  Enable V.34+ modulation

                    1   Disable V.34+ modulation

     5-7            0   Reserved

                          BIT-MAPPED REGISTER S33

  Format:            AT [cmds] S33=n [cmds]

  Range:             0-255

  Description:       Disable/enable data rates

     Bit        Value                       Function

      0              0  Enable 2400 symbol rate

                    1   Disable 2400 symbol rate

      1              0  Enable 2743 symbol rate

                    1   Disable 2743 symbol rate

      2              0  Enable 2800 symbol rate

                    1   Disable 2800 symbol rate

      3              0  Enable 3000 symbol rate

                    1   Disable 3000 symbol rate

      4              0  Enable 3200 symbol rate

                    1   Disable 3200 symbol rate

      5              0  Enable 3429 symbol rate

                    1   Disable 3429 symbol rate

      6             0   Reserved

      7              0  Enable shaping

                    1   Disable shaping

                          BIT-MAPPED REGISTER S34

  Format:            AT [cmds] S34=n [cmds]

  Range:             0-255

  Description:       Disable/enable trellis encoding

     Bit        Value                       Function

      0              0  Enable 8S-2D trellis encoding

                    1   Disable 8S-2D trellis encoding

      1              0  Enable 16S-4D trellis encoding

                    1   Disable 16S-4D trellis encoding

      2              0  Enable 32S-2D trellis encoding

                    1   Disable 32S-2D trellis encoding

      3              0  Enable 64S-4D trellis encoding

                    1   Disable 64S-4D trellis encoding

      4             0   Reserved

      5              0  Enable TX level deviation

                    1   Disable TX level deviation

      6              0  Enable pre-emphasis

                    1   Disable pre-emphasis

      7              0  Enable pre-coding

                    1   Disable pre-coding

                          BIT-MAPPED REGISTER S41

  Format:            AT [cmds] S41=n [cmds]

  Range:             0-255

  Description:       Enable/disable distinctive ring

     Bit        Value                       Function

      0              0  Disable distinctive ring

                    1   Enable distinctive ring

     1-7            0   Reserved

