
SILICOM MULTIMEDIA SYSTEMS, INC.

MODEM MASTER 8400/56K

Card Type                    Modem
Chip Set                     Unidentified
I/O Options:                 Line in, line out, microphone in, speaker out
Maximum Modem Rate           56.0Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32bis,
                             V.34, V.34bis, X2
Fax Modulation Protocol      ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    I
Data Bus                     16-bit ISA

[Image]

                                CONNECTIONS

         Function            Label             Function             Label

  Line in (RJ-11)             CN1     Microphone in                 CN3

  Line out (RJ-11)            CN2     Speaker out                   CN4

                          SUPPORTED COMMAND SET

                            Basic AT Commands

  AT, +++, A/

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

  &C, &G, &T, &U

                            Special Commands

  #CID

                               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

                               BREAK OPTIONS

  Type:                Configuration

  Format               AT [cmds] &Y n [cmds]

  Description:         Sets the method for break transmission during
                       error-control and ASB connections.

       Command                              Function

         &Y0           Destructive signaling

         &Y1           Destructive/expedited signaling

         &Y2           In-sequence/expidated signaling

         &Y2           In-sequence signaling

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] &M n [cmds]

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

    Command                              Function

      &M0        Normal mode enabled

      &M4        Normal/MNP reliable mode enabled

      &M5        MNP reliable mode enabled

                   CONTINUOUSLY REPEAT PREVIOUS COMMAND

  Type:           Immediate

  Format:         A>

  Description:    Continuosly repeats previous command

            Note: Do not precede this command with AT, or follow it with
            <CR>.

                             DATA COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] &K n [cmds]

  Description:   Enables data compression options

    Command                              Function

      &K0        Data compression disabled

      &K1        Automatic data compression enabled

      &K2        Data compression enabled

      &K3        Selective data compression enabled

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &S n [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR high only while modem is handshaking or connected

                         DATA TERMINAL READY (DTR)

  Type:             Configuration

  Format:           AT [cmds] &D n [cmds]

  Description:      Selects modem response to DTR

     Command                              Function

       &D0          Modem does not respond to DTR

       &D1          Modem goes to command mode on DTR toggle

       &D2          Modem goes to command mode and disconnects (hangs up)
                    on DTR toggle;

                    Auto-Answer is disabled on low DTR.

       &D3          Modem is initialized on DTR toggle

                         DCE LINE SPEED (MAXIMUM)

  Type:                  Configuration

  Format                 AT [cmds] &N n [cmds]

  Description:           Sets the maximum allowable data exchange rate
                         attempted during handshake process.

        Command                              Function

          &N0            Highest link speed

          &N1            300bps

          &N2            1200bps

          &N3            2400bps

          &N4            4800bps

          &N5            7200bps

          &N6            9600bps

          &N7            12.0Kbps

          &N8            14.4Kbps

          &N9            16.8Kbps

          &N10           19.2Kbps

          &N11           21.6Kbps

          &N12           24.0Kbps

          &N13           26.4Kbps

          &N14           28.8Kbps

          &N15           31.2Kbps

          &N16           33.6Kbps

          &N17           33.6Kbps

          &N18           33.3Kbps

          &N19           37.3Kbps

          &N20           42.6Kbps

          &N21           44.0Kbps

          &N22           45.3Kbps

          &N23           46.6Kbps

          &N24           48.0Kbps

          &N25           49.3Kbps

          &N26           50.6Kbps

          &N27           52.0Kbps

                      &N253.3Kbps

          &N29           54.6Kbps

          &N30           56.0Kbps

          &N31           57.3Kbps

                         DCE LINE SPEED (MINIMUM)

  Type:                  Configuration

  Format                 AT [cmds] &U n [cmds]

  Description:           Sets the minimum allowable data exchange rate
                         attempted during handshake process.

        Command                              Function

          &U0            Variable link rate

          &U1            300bps

          &U2            1200bps

          &U3            2400bps

          &U4            4800bps

          &U5            7200bps

          &U6            9600bps

          &U7            12.0Kbps

          &U8            14.4Kbps

          &U9            16.8Kbps

          &U10           19.2Kbps

          &U11           21.6Kbps

          &U12           24.0Kbps

          &U13           26.4Kbps

          &U14           28.8Kbps

          &U15           31.2Kbps

          &U16           33.6Kbps

          &U17           33.6Kbps

          &U18           33.3Kbps

          &U19           37.3Kbps

          &U20           42.6Kbps

          &U21           44.0Kbps

          &U22           45.3Kbps

          &U23           46.6Kbps

          &U24           48.0Kbps

          &U25           49.3Kbps

          &U26           50.6Kbps

          &U27           52.0Kbps

                      &U253.3Kbps

          &U29           54.6Kbps

          &U30           56.0Kbps

                      &U357.3Kbps

                                   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

          DP             Pulse dialing enabled

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

          DSn            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!             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 5 seconds of silence is received
                         prior to executing the rest of the dial string.

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

          D$             HELP; dial commands

                          FACTORY DEFAULT PROFILE

  Type:             Configuration

  Format:           AT [cmds] &F [cmds]

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

       &F0          Load factory configuration 0; flow control disabled

       &F1          Load factory configuration 1; hardware flow control
                    enabled

       &F2          Load factory configuration 2; software flow control
                    enabled

                              FIXED DTE SPEED

  Type:          Configuration

  Format:        AT [cmds] &B n [cmds]

  Description:   Selects fixed DTE speed options

    Command                              Function

      &B1        Fixed DTE speed enabled

      &B2        Fixed DTE speed in error correction mode enabled

                             FLOW CONTROL - RX

  Type:          Configuration

  Format:        AT [cmds] I n [cmds]

  Description:   Enables receive flow control options

    Command                              Function

      &I0        Flow control disabled

      &I1        XON/XOFF flow control enabled

      &I2        XON/XOFF filtered flow control enabled

      &I3        HP enq/ack host mode enabled

      &I4        HP enq/ack terminal mode enabled

      &I5        XON/XOFF for non-error corrected mode enabled

                             FLOW CONTROL - TX

  Type:          Configuration

  Format:        AT [cmds] &H n [cmds]

  Description:   Enables transmission flow control options

    Command                              Function

      &H0        Flow control disabled

      &H1        RTS to CTS flow control enabled

      &H2        XON/XOFF flow control enabled

      &H3        RTS to CTS & XON/XOFF flow control enabled

                         HELP - AMPERSAND COMMANDS

  Type:          Immidiate

  Format:        AT [cmds] &$ [cmds]

  Description:   Displays ampersand command help file

                            PULSE DIALING RATIO

  Type:          Configuration

  Format:        AT [cmds] &P n [cmds]

  Description:   Selects pulse dial make/break ratio

    Command                              Function

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

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

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] I n [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports product code

       I1        Reports ROM checksum

       I2        Tests and reports ROM checksum

       I3        Reports product ID string

       I4        Reports current settings

       I5        Reports NVRAM settings

       I6        Reports link diagnostics

       I7        Reports product configuration

       I9        Reports plug and play enumeration

      I11        Reports link diagnostics

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] Q n [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 enabled in originate mode

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] &A n [cmds]

  Description:   Selects result code options

    Command                              Function

      &A0        ARQ result codes disabled

      &A1        ARQ result codes enabled

      &A2        Modulation codes enabled

      &A3        Extended result codes enabled

                                    RTS

  Type:          Configuration

  Format:        AT [cmds] &R n [cmds]

  Description:   Selects RTS options

    Command                              Function

      &R1        RTS is ignored in command mode.

      &R2        Receive to DTE/ RTS forced high

                     SELECT CALL PROGRESS RESULT CODES

  Type:               Configuration

  Format:             AT [cmds] X n [cmds]

  Description:        Enables selection of tone detection and associated
                      result code format options

      Command                              Function

         X0           Basic result codes enabled

         X1           Extended result codes enabled

                                SOFT RESET

  Type:                  Immediate

  Format:                AT [cmds] Y n [cmds]

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

        Command                              Function

          Y0             Write the active profile to stored profile 0

          Y1             Write the active profile to stored profile 1

          Y2             Load factory configuration 0; flow control
                         disabled

          Y3             Load factory configuration 1; hardware flow
                         control enabled

          Y4             Load factory configuration 2; software flow
                         control enabled

                                SOFT RESET

  Type:                  Immediate

  Format:                AT [cmds] Z n [cmds]

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

        Command                              Function

          Z0             Y setting determines reset

          Z1             Write the active profile to stored profile 0

          Z2             Write the active profile to stored profile 1

          Z3             Load factory configuration 0; flow control
                         disabled

          Z4             Load factory configuration 1; hardware flow
                         control enabled

          Z5             Load factory configuration 2; software flow
                         control enabled

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] L n [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

S(STATUS) - REGISTERS

                          BIT-MAPPED REGISTER S13

  Type:             Register

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

  Range:            Unidentified

  Unit:             Bit-mapped

  Description:      Controls DTR reset, DS0,
                    quick retrain, and
                    escape sequence options

       Bit                   Value                     Function

        0                                 0    Reset on low DTR disabled

                                          1    Reset on low DTR enabled

        1                                 0    Reduced non-error
                                               corrected transmit buffer
                                          1    disabled

                                               Reduced non-error
                                               corrected transmit buffer
                                               enabled

        2                                 0    DEL=backspace disabled

                                          1    Set DEL=backspace

        3                                 0    DS0 on DTR disabled

                                          1    DS0 on DTR enabled

        4                                 0    DS0 on reset disabled

                                          1    DS0 on reset enabled

        5                                 0    Not used

        6                                 0    Quick retrain enabled

                                          1    Quick retrain disabled

        7                                 0    Escape code hang-up
                                               disabled
                                          1
                                               Escape code hang-up
                                               enabled

                          BIT-MAPPED REGISTER S15

  Format           AT [cmds] S15= n [cmds]

  Range:           Unidentified

  Unit:            Bit-mapped

  Description:     Selects compression, and
                   MNP mode.

       Bit                  Value                      Function

      1 - 0                             00    MNP/V.42 in V.22 mode
                                              enabled
                                        01
                                              MNP/V.42 in V.22 mode
                                              disabled

        2                               00    MNP/V.42 in V.32 mode
                                              enabled
                                        01
                                              MNP/V.42 in V.32 mode
                                              disabled

        3                                0    MNP handshake enabled

                                         1    MNP handshake disabled

        4                                0    MNP4 enabled

                                         1    MNP4 disabled

        5                                0    MNP3 enabled

                                         1    MNP3 disabled

        6                                0    Unusual MNP incompatibility
                                              enabled
                                         1
                                              Unusual MNP incompatibility
                                              disabled

        7                               00    V.42 enabled

                                        01    V.42 disabled

                                        10    V.42 detect phase enabled

                                        11    V.42 detect phase disabled

                          BIT-MAPPED REGISTER S27

  Format            AT [cmds] S27= n [cmds]

  Range:            Unidentified

  Unit:             Bit-mapped

  Description:      Selects modulations and
                    error correction flags

       Bit                   Value                     Function

        0                                 0    V.21 mode disabled

                                          1    V.21 mode enabled

        1                                 0    TCM mode enabled

                                          1    TCM mode disabled

        2                                 0    V.32 mode enabled

                                          1    V.32 mode disabled

        3                                 0    2100Hz answer tone enabled

                                          1    2100Hz answer tone
                                               disabled

        4                                 0    V.23 fallback disabled

                                          1    V.23 fallback enabled

        5                                 0    V32bis mode enabled

                                          1    V32bis mode disabled

        6                                 0    Not used

        7                                 0    Software compatibility
                                               mode disabled
                                          1
                                               Software compatibility
                                               mode enabled

                          BIT-MAPPED REGISTER S32

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

  Range:            0-255

  Description:      Select modulations and
                    call control flags

       Bit                    Value                     Function

        0                                   0   V.8 call indicate
                                                disabled
                                            1
                                                V.8 call indicate enabled

        1                                   0   V.8 mode disabled

                                            1   V.8 mode enabled

        2                                   0   Reserved

        3                                   0   V.34 modulation enabled

                                            1   V.34 modulation disabled

        4                                   0   V.34+ modulation enabled

                                            1   V.34+ modulation disabled

        5                                   0   X2 modulation enabled

                                            1   X2 modulation disabled

        6                                   0   Reserved

        7                                   0   Reserved

                          BIT-MAPPED REGISTER S33

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

  Range:           0-255

  Description:     Enables/disables symbol rates

       Bit                     Value                      Function

        0                                     0    2400 symbol rate
                                                   enabled
                                              1
                                                   2400 symbol rate
                                                   disabled

        1                                     0    2743 symbol rate
                                                   enabled
                                              1
                                                   2743 symbol rate
                                                   disabled

        2                                     0    2800 symbol rate
                                                   enabled
                                              1
                                                   2800 symbol rate
                                                   disabled

        3                                     0    3000 symbol rate
                                                   enabled
                                              1
                                                   3000 symbol rate
                                                   disabled

        4                                     0    3200 symbol rate
                                                   enabled
                                              1
                                                   3200 symbol rate
                                                   disabled

        5                                     0    3429 symbol rate
                                                   enabled
                                              1
                                                   3429 symbol rate
                                                   disabled

        6                                     0    Reserved

        7                                     0    Shaping enabled

                                              1    Shaping disabled

                          BIT-MAPPED REGISTER S34

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

  Range:           0-255

  Description:     Controls trellis coding
                   options

       Bit                  Value                      Function

        0                                0   8S-2D trellis encoding
                                             enabled
                                         1
                                             8S-2D trellis encoding
                                             disabled

        1                                0   16S-4D trellis encoding
                                             enabled
                                         1
                                             16S-4D trellis encoding
                                             disabled

        2                                0   32S-2D trellis encoding
                                             enabled
                                         1
                                             32S-2D trellis encoding
                                             disabled

        3                                0   64S-4D trellis encoding
                                             enabled
                                         1
                                             64S-4D trellis encoding
                                             disabled

        4                                0   Non-linear coding enabled

                                         1   Non-linear coding disabled

        5                                0   TX level deviation enabled

                                         1   TX level deviation disabled

        6                                0   Pre-emphasis enabled

                                         1   Pre-emphasis disabled

        7                                0   Pre-coding enabled

                                         1   Pre-coding disabled

                          BIT-MAPPED REGISTER S41

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

  Range:           Unidentified

  Description:     Enables/disables destinctive
                   ring

       Bit                    Value                      Function

        0                                    0    Distinctive ring
                                                  disabled
                                             1
                                                  Distinctive ring
                                                  enabled

      7 - 1                                  0    Reserved

                                BREAK SEND

  Type:          Configuration

  Format:        AT [cmds] S21= n [cmds]

  Range:         Unidentified

  Unit:          .01 second

  Description:   Sends break to modem

                       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

                       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

                             INACTIVITY TIMER

  Type:                  Register

  Format                 AT [cmds] S19= n [cmds]

  Range:                 0-255

  Unit:                  1 minute

  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.

                                TEST MODES

  Type:             Register

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

  Range:            0-125

  Unit:             Bit-mapped

  Description:      Controls loopback tests,
                    analog, digital, remote
                    digital, and self tests.

        Bit                   Value                     Function

         0                                  0   Not used

         1                                  0   Dial test not in progress

                                            1   Dial test in progress

       2 - 7                                0   Not Used

                      V.21 ANSWER MODE FALLBACK TIMER

  Type:                 Register

  Format                AT [cmds] S29= n [cmds]

  Range:                Unidentified

  Unit:                 Unidentified

  Description:          Sets the amount of inacivity allowed in V.21
                        answer mode prior to initiating fallback

                           V.32 HANDSHAKE TIMER

  Type:          Register

  Format         AT [cmds] S28= n [cmds]

  Range:         Unidentified

  Unit:          .1 second

  Description:   Sets the V.32 handshake time

