
DIGICOM SPA

SNM49

Card Type                    Modem
Chip Set                     Unidentified
I/O Options                  Power, switched line, 25-pin serial port
Maximum Modem Rate           33.6Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     ITU-T V.21, V.22, V.22bis,V.23, V.32,
                             V.32bis, V.34, V.34+
Fax Modulation Protocol      V.17, V.29, V.27
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I
Data Bus                     External

[Image]

                                CONNECTIONS

       Function           Label              Function             Label

  Power                        CN1       Switched line (RJ-11       CN3
                                         connector)

  25-pin serial port           CN2       Power switch               SW1

                             DIAGNOSTIC LED(S)

   LED       Color        Status                  Condition

   PWR       Green          On                   Power is on

   PWR       Green         Off                   Power is off

   DSR        Red           On                  Modem is ready

   DSR        Red          Off                Modem is not ready

   DTR        Red           On                Computer is ready

   DTR        Red          Off              Computer is not ready

    TD        Red           On            Modem is transmitting data

    TD        Red          Off          Modem is not transmitting data

   CTS        Red           On       CTS signal is high. TA ready to send
                                                     data

   CTS        Red          Off                CTS signal is low

    RD        Red           On             Modem is receiving data

    RD        Red          Off           Modem is not receiving data

   DCD        Red           On               Data carrier present

   DCD        Red          Off       Data carrier not present. Connection
                                               not established

   TST        Red           On            Unit is conducting a test

   TST        Red          Off            Unit not conducting a test

   LNE        Red           On                Modem is off-hook

   LNE        Red          Off                 Modem is on-hook

                   SUPPORTED COMMAND SET

                     Basic AT Commands

  AT, A/

  A, C, E, H, L, M, Q, V, X, Y, Z

  &F, &M, &T, &X

                        S Registers

  Unidentified

  Note: See MHI Help File for full command documentation.

                         PROPRIETARY AT COMMAND SET

                               COMMAND PORT

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Description:   Enables/disables command port

    Command                              Function

      &Y0        Command port disabled

      &Y1        Command port enabled

                          COMMUNICATION PROTOCOLS

  Type:          Configuration

  Format:        AT [cmds] Bn [cmds]

  Description:   Selects the communication protocol for data calls

    Command                              Protocol

       B0        CCITT modulation with fixed carrier

                               CONNECT MODE

  Type:                Configuration

  Format:              AT [cmds] &En [cmds]

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

       Command                              Function

         &E0           Normal mode enabled

         &E1           MNP/V.42 buffered auto-reliable mode enabled

         &E2           V.42 sequence in auto-reliable mode; normal data
                       mode if V.42 is not detected

         &E3           V. 42 reliable mode enabled. Disconnect if fails

         &E4           MNP auto-reliable mode; normal data mode if MNP is
                       not detected

         &E5           MNP reliable mode enabled. Disconnect if fails

         &E6           MNP/V. 42 auto-reliable mode; normal data mode if
                       error correction is not detected

         &E7           MNP/V. 42 reliable mode enabled. Disconnect if
                       fails

             DATA SET READY (DSR) & DATA CARRIER DETECT (DCD)

  Type:                  Configuration

  Format:                AT [cmds] &Cn [cmds]

  Description:           Selects whether the DSR & DCD option is enabled
                         or disabled

        Command                             Function

          &C0            DSR & DCD forced high

          &C1            DSR & DCD are related to modulation standard

          &C2            DSR forced high

          &C3            DCD forced high

          &C4            DSR & DCD forced high. When modem disconnects,
                         DCD goes off for 2 seconds

          &C5            DSR & DCD forced high. If DTR goes off or modem
                         disconnects, DSR & DCD go off for 500ms

                         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

           DR            Reverse mode enabled

           DP            Pulse dialing enabled

           DN            Dial stored telephone number

           DT            Tone dialing enabled

           DW            Dialing resumed following dial tone detection

           D,            Dialing paused

           D!            Flash function initiated. Modem commanded to go
                         on-hook for .5sec

           D@            Wait for Quite Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by 5 seconds of silence

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

           D/            Wait for .125sec

                         DISPLAY DIRECTORY NUMBER

  Type:          Configuration

  Format:        AT [cmds] &Nn [cmds]

  Description:   Displays/deletes telephone directory

    Command                              Function

      &N0        Displays directory

      &N99       deletes entire telephone dorectory

                      DISPLAY STORED TELEPHONE NUMBER

  Type:          Configuration

  Format:        AT [cmds] Nn? [cmds]

  Description:   Displays stored number n

                             DTE FLOW CONTROL

  Type:                Configuration

  Format:              AT [cmds] &Un [cmds]

  Description:         Enables DTE flow control options

       Command                              Function

         &U0           Flow control disabled

         &U1           XON/XOFF flow control enabled

         &U2           XON/XOFF passed through remote terminal

         &U4           RTS/CTS flow control enabled

         &U5           Software & hardware flow control enabled

         &U6           Software & hardware flow control enabled. XON/XOFF
                       passed through remote terminal

                             DUMB MODE CONTROL

  Type:             Configuration

  Format:           AT [cmds] &Vn [cmds]

  Description:      Controls access to command mode

     Command                              Function

       &V0          Normal command mode access enabled

       &V1          Command mode access via escape sequence enabled

       &V2          Dumb mode; all commands are ignored. Use front panel
                    to change status

                           FALLBACK/FALL-FORWARD

  Type:                  Configuration

  Format:                AT [cmds] &An [cmds]

  Description:           Controls multi-standard detection feature which
                         allows the modem to fall-forward and fallback if
                         the modem signaling rate does not match the DTE

        Command                              Function

          &A0            multi-standard detection disabled

          &A1            multi-standard detection enabled

                                FRONT PANEL

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Enables/disables front panel buttons

    Command                              Function

      &S0        Front panel disabled

      &S1        Front panel enabled

                                GUARD TONE

  Type:           Configuration

  Format:         AT [cmds] &Gn [cmds]

  Description:    Commands the modem to transmit a guard tone in
                  V.22/V.22bis

    Command                              Function

      &G0         Guard tone disabled

      &G2         1800Hz guard tone enabled

                             INTERFACE BUFFER

  Type:                  Configuration

  Format:                AT [cmds] &In [cmds]

  Description:           Allows the DTE to be set to a uniform rate
                         regardless of the rate determined by the
                         communications format selected

        Command                              Function

          &I0            Constant speed interface to disabled DTE

          &I1            Constant speed interface enabled; CONNECT
                         message indicates connect rate. Parity is
                         transferred in transparent mode.

          &I2            Constant speed interface enabled; CONNECT
                         message indicates DTE rate. Parity is
                         transferred in transparent mode.

          &I3            Constant speed interface enabled; CONNECT
                         message indicates connect rate. Parity is
                         reconstructed by the modem.

                              LINE MODULATION

  Type:          Configuration

  Format:        AT [cmds] Fn [cmds]

  Description:   Determines modem modulation standard

    Command                              Function

       F0        Multi-standard mode

       F1        300bps

       F3        1200/75bps

       F4        1200bps

       F5        2400bps

       F6        4800bps

       F7        7200bps

       F8        9600bps

       F9        12.0Kbps

      F10        14.4Kbps

      F11        16.8Kbps

      F12        19.2Kbps

      F13        21.6Kbps

      F14        24.0Kbps

      F15        26.4Kbps

      F16        28.8Kbps

      F17        31.2Kbps

      F18        33.6Kbps

                            MODEM FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables flow control options

    Command                              Function

      &K0        Flow control disabled

      &K1        XON/XOFF flow control enabled

      &K2        RTS/CTS flow control enabled

      &K3        Software & hardware flow control enabled

                                  ON-LINE

  Type:           Immediate

  Format:         AT [cmds] On [cmds]

  Description:    Controls on-line command (data transmission) state
                  options.

    Command                              Function

       O0         On-line command mode with no retraining enabled

                            PULSE DIALING RATIO

  Type:          Configuration

  Format:        AT [cmds] &Pn [cmds]

  Description:   Selects pulse dial make/break ratio

    Command                              Function

      &P0        40/60ms at 10pps (North America)

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

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports modem type

       I1        Reports software revision level

       I2        Reports ROM checksum

       I3        Reports identification in S38

       I4        Reports product code

       I8        Reports revision level

                                  RTS/CTS

  Type:              Configuration

  Format:            AT [cmds] &Rn [cmds]

  Description:       Selects RTS/CTS options

      Command                              Function

        &R0          CTS follows RTS. Register S26 delays CTS by value
                     selected (0 - 2.55sec)

        &R1          CTS forced high, RTS is ignored.

        &R2          CTS force high

        &R3          CTS always follows RTS

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

                           STORE ACTIVE PROFILE

  Type:                Configuration

  Format:              AT [cmds] &Wn [cmds]

  Description:         Writes the values for the active profile into the
                       non-volatile RAM at location n.

       Command                              Function

         &W0           Write the active profile to stored profile 0

         &W1           Write the active profile to stored profile 1

         &W2           Write the active profile to stored profile 2

         &W3           Write the active profile to stored profile 3

         &W4           Write the active profile to stored profile 4

         &W5           Write the active profile to stored profile 5

         &W6           Write the active profile to stored profile 6

         &W7           Write the active profile to stored profile 7

         &W8           Write the active profile to stored profile 8

         &W9           Write the active profile to stored profile 9

        &W99           Writes the 10 factory configurations in the 10
                       user profiles

                          STORE TELEPHONE NUMBER

  Type:               Configuration

  Format:             AT [cmds] Nn&Z [cmds]

  Description:        Writes selected telephone numbers into the
                      non-volatile memory at location n

                              SPECIAL COMMANDS

                             ASYNCHRONOUS MODE

  Type:          Configuration

  Format:        AT [cmds] *Dn [cmds]

  Description:   Enables DTR/1 direct call in asynchronous mode

    Command                              Function

      *D0        DTR/1 disabled

      *D1        DTR/1 enabled with CTS on in off-line

      *D2        DTR/1 enabled with CTS off in off-line

               AUTO-RELIABLE BUFFER/CHARACTER CONFIGURATION

  Type:              Configuration

  Format:            AT [cmds] #An [cmds]

  Description:       Controls the handling of incoming data during
                     auto-reliable time period

      Command                             Function

        #A0          Auto-reliable buffer and character disabled

        #A1          Auto-reliable character enabled

        #A2          Auto-reliable buffer enabled

        #A3          Auto-reliable buffer and character enabled

                         BIT ERROR RATE THRESHOLD

  Type:                Configuration

  Format:              AT [cmds] #Qn [cmds]

  Description:         Determines Bit Error Rate Threshold to initiate
                       fall-forward/fallback retrain

       Command                              Function

         #Q0           Standard bit error rate threshold: SQ=3 equivalent
                       at bit error rate of 1*10-5

         #Q1           Alternative bit error rate threshold: SQ=2
                       equivalent at bit error rate of 1*10-3

                               BREAK OPTIONS

  Type:             Configuration

  Format            AT [cmds] *Yn [cmds]

  Description:      Sets the method for break transmission

     Command                              Function

       *Y0          Expedited signaling, immediately send break

       *Y1          Destructive signaling, buffers cleared, immediately
                    send break

       *Y2          In-sequence signaling, break sent in sequence with
                    transmitted data

       *Y3          Break signal ignored

                             C140-C141 CONTROL

  Type:               Configuration

  Format:             AT [cmds] *Tn [cmds]

  Description:        Enables/disables C140 & C141 signal interface

      Command                              Function

        *T0           C140 & C141 signal interface disabled

        *T1           C140 signal interface enabled

        *T2           C141 signal interface enabled

        *T3           C140 & C141 signal interface enabled

        *T4           C140 & C141 signal interface enabled. C141 requests
                      loop 3 with modem on-line

                               CALLING TONE

  Type:                  Configuration

  Format:                AT [cmds] *Gn [cmds]

  Description:           Controls whether the DTE will allow the modem to
                         send a 1300Hz calling tone when originating

        Command                              Function

          *G0            Disable calling tone

          *G1            Enable calling tone

                             DATA COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] *En [cmds]

  Description:   Enables/disables data compression

    Command                              Function

      *E0        Data compression disabled

      *E1        Data compression enabled

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] *Pn [cmds]

  Description:   Selects DSR options

    Command                              Function

      *P0        DSR standard

      *P1        DSR on for 200ms after aborted call

      *P2        DSR follows DCD during handshake

      *P3        DSR follows DCD during handshake and DSR wink

                              DETECTION PHASE

  Type:              Configuration

  Format:            AT [cmds] #En [cmds]

  Description:       Enables/disables detection phase before the
                     negotiation of V.42 protocol

      Command                              Function

        #E0          Detection phase disabled

        #E1          Detection phase enabled

                         DISPLAY BLACKLIST NUMBERS

  Type:          Configuration

  Format:        AT [cmds] *Bn [cmds]

  Description:   Displays blacklist numbers

    Command                              Function

      *B0        Displays delayed and forbidden numbers

      *B1        Displays delayed numbers

      *B2        Displays forbidden numbers

                           DISPLAY CONFIGURATION

  Type:                  Immediate

  Format:                AT [cmds] *Cn [cmds]

  Description:           Displays active configuration. At the end of the
                         list, it is possible to display the error
                         message relative to the connection state.

                           DISPLAY STORED NUMBER

  Type:           Immediate

  Format:         AT [cmds] *Nn [cmds]

  Description:    Displays stored number for DTR/1 direct call in V.25bis
                  mode

                                 DTE SPEED

  Type:          Configuration

  Format:        AT [cmds] *In [cmds]

  Description:   Controls DTE interface data rate

    Command                              Function

      *I0        Automode enabled

      *I1        300bps

      *I4        1200

      *I5        2400bps

      *I6        4800bps

      *I7        7200bps

      *I8        9600bps

      *I10       14.4Kbps

      *I11       19.2Kbps

      *I13       38.4Kbps

      *I14       57.6Kbps

      *I15       115.2Kbps

                           EXTENDED RESULT CODES

  Type:                  Configuration

  Format:                AT [cmds] #Xn [cmds]

  Description:           Enables/disables extended code CONNECT messages
                         to indicate buffer or error correction
                         activation (ATX)

        Command                             Function

          #X0            Extended result codes disabled

          #X1            /BUF and /REL messages enabled

          #X2            Extended result codes enabled

          #X3            Extended result codes enabled. ONL/OFL messages
                         disabled in V.25bis

                        FLOW CONTROL DURING RETRAIN

  Type:          Configuration

  Format:        AT [cmds] #Kn [cmds]

  Description:   Determines flow control handling during retrain phases

    Command                              Function

      #K0        Flow control option during retrain disabled

      #K1        Flow control option during retrain follows &K

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] *Kn [cmds]

  Description:   Sets type of flow control used by modem

    Command                              Function

      *K0        CTS forced high

      *K1        XON/XOFF flow control enabled

      *K2        CTS off during handshake

      *K3        CTS off during handshake & XON/XOFF flow control enabled

      *K4        CTS off in off-line

      *K5        CTS off in off-line & XON/XOFF flow control enabled

                          HALF DUPLEX SIMULATION

  Type:          Configuration

  Format:        AT [cmds] #Hn [cmds]

  Description:   Enables/disables half duplex simulation

    Command                              Function

      #H0        Half-Duplex simulation disabled

      #H1        Half-Duplex simulation enabled

                              HANDSHAKE BREAK

  Type:             Configuration

  Format:           AT [cmds] #Pn [cmds]

  Description:      Enables/disables handshake abort if DTE sends data
                    during handshake

     Command                              Function

       #P0          Handshake abort enabled

       #P1          Handshake abort disabled

                             LINE FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] *Fn [cmds]

  Description:   Controls the flow of data between local and remote
                 modems

    Command                              Function

      *F0        Remote flow control disabled

      *F1        Remote flow control enabled

                            MINIMUM LINE SPEED

  Type:          Configuration

  Format:        AT [cmds] #Fn [cmds]

  Description:   Determines minimum data rate

    Command                              Function

      #F0        Function disabled. No minimum speed

      #F1        300bps

      #F3        1200/75bps

      #F4        1200bps

      #F5        2400bps

      #F6        4800bps

      #F7        7200bps

      #F8        9600bps

      #F9        12.0Kbps

      #F10       14.4Kbps

      #F11       16.8Kbps

      #F12       19.2Kbps

      #F13       21.6Kbps

      #F14       24.0Kbps

      #F15       26.4Kbps

      #F16       28.8Kbps

      #F17       31.2Kbps

      #F18       33.6Kbps

                            OVERSPEED SELECTION

  Type:          Configuration

  Format:        AT [cmds] *On [cmds]

  Description:   Sets type of flow control used by modem

    Command                              Function

      *O0        Overspeed +1%: -2.5%

      *O1        Overspeed +2.3%: -2.5%

                              PREFIX DIALING

  Type:                  Configuration

  Format:                AT [cmds] #Wn [cmds]

  Description:           Enables the automatic dialing of a prefix before
                         every number. Prefix is stored in location 19 of
                         the memory

        Command                              Function

          #W0            Automatic prefix dialing enabled

          #W1            Automatic prefix dialing disabled

                           REMOTE ACCESS CONTROL

  Type:                Configuration

  Format:              AT [cmds] #Tn [cmds]

  Description:         Sets remote access control

       Command                              Function

         #T0           Remote access control disabled

         #T4           Modem enabled for remote access, download request
                       and loop 2 remote test

         #T5           Remote access and download request disabled

         #T6           Request for remote access control sent

         #T7           Request for download of the configuration
                       indicated by registers S65 and S66 sent

                       SIGNAL QUALITY ACTION CONTROL

  Type:          Configuration

  Format:        AT [cmds] *Qn [cmds]

  Description:   Controls signal quality action

    Command                              Function

      *Q0        Signal quality action disabled

      *Q1        Retrain enabled

      *Q2        Fallback enabled (V.34, V.32bis, V.32, or V.22 mode)

      *Q3        Disconnects after first aborted retrain

                               SPECIAL MODE

  Type:                  Configuration

  Format:                AT [cmds] #Vn [cmds]

  Description:           Selects V.23 full duplex special functioning
                         mode

        Command                              Function

          #V0            V.23 automatic mode: 75bps transmit, 1200bps
                         receive (originate), 1200bps transmit, 75bps
                         receive (answer)

          #V1            75bps transmit, 1200bps receive fixed

          #V2            1200bps transmit, 75bps receive fixed

                            S-REGISTER DISPLAY

  Type:          Immediate

  Format:        AT [cmds] *S [cmds]

  Description:   Displays values stored in S-registers

                         SYNCHRONOUS CLOCK CONTROL

  Type:           Configuration

  Format:         AT [cmds] *Xn [cmds]

  Description:    Forces modems transmit and receive clock at the DTE
                  interface

     Command                             Function

       *X0        Synchronous clocks are on in data mode only

       *X1        Synchronous clocks are always on

                       TRANSMISSION LEVEL - SWITCHED

  Type:            Configuration

  Format:          AT [cmds] *Ln [cmds]

  Default:         10

  Range:           3-15

  Unit:            -1 dBm

  Description:     Sets the signal level for transmission over switched
                   phone lines

                        V.25BIS DTR/1 STORED NUMBER

  Type:                   Immediate

  Format                  AT [cmds] *Zxxxx [cmds]

  Description:            Stores a number for DTR/1 operation in V.25bis
                          mode. Must be placed at the end of command
                          string

                               V.25BIS MODE

  Type:          Configuration

  Format:        AT [cmds] *Vn [cmds]

  Description:   Enables/disables V.25bis mode

    Command                              Function

      *V0        V.25bis in DTR/2 asynchronous

      *V1        V.25bis in DTR/1 synchronous/asynchronous (&M)

      *V2        V.25bis in DTR/2 HDLC

      *V7        Returns in AT mode



