
MEDIAFORTE PRODUCTS PTE., LTD.

COMMLINK 28.8 INTERAL MODEM

Card Type                    Modem/Fax card
Chip Set                     Unidentified
I/O Options                  Line out (RJ-11), line in (RJ-11)
Maximum Modem Rate           28.8Kbps
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, V34
Fax Modulation Protocol      ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     16-bit ISA

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Line out                        CN1       Line in                 CN2

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

  A, C, E, H, L, M, O, P, Q, S, T, V, X, Y, Z

  &C, &F, &G &Q, &U &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \G, \L, \N

  %C, %L, %Q

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30,
  S32, S33, S38, S91



                              Voice Commands

  #CID, #MDL?, #MFR?, #REV?, #CLS, #SPK, #TL, #VBQ?, #VBT, #VCI?, #VRA,
  #VRX, #VSK, #VSS

  #VTD, #VTS, #VTX

  Note: See MHI Help File for full command documentation.

                         Proprietary AT Command Set

                            AUTO-MODE DETECTION

  Type:                  Configuration

  Format:                AT [cmds] Nn [cmds]

  Description:           Selects various options for the automatic
                         detection and negotiation of protocols during
                         the handshake process if the modem is
                         communicating with a remote modem of dissimilar
                         speed.

        Command                              Function

          N0             Auto-mode detection disabled

          N1             Auto-mode detection enabled

                          COMMUNICATION PROTOCOLS

  Type:                  Configuration

  Format:                AT [cmds] Bn [cmds]

  Description:           Selects the communication protocol for data
                         calls

            Note: The B command allows the simultaneous selection of more
            than one suffix, enabling multiple protocols.

        Command                              Protocol

          B0             ITU-T V.22 at 1200bps

          B1             Bell 212A at 1200bps

          B2             ITU-T V.23 at 1200bps

                          CONFIGURATION PROFILES

  Type:          Immediate

  Format:        AT [cmds] &V [cmds]

  Description:   Displays active and stored configuration profiles

    Command                              Function

      &V0        Display active profile

      &V1        Display stored profiles

      &V2        Display stored telephone numbers

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR on in on-line mode, off in command mode

                                     DATA TERMINAL READY (DTR)

  Type:               Configuration

  Format:             AT [cmds] &Dn [cmds]

  Description:        Selects modem response to DTR

      Command                                          Function

        &D0           DTR is ignored (assumed on)

           &D1        Modem goes to command mode after DTR goes is off

        &D2           Modem goes to command mode and disconnects (hangs up) after DTR goes off

        &D3           Modem is initialized after DTR goes off

                                   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

         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!             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^             1300Hz calling tone enabled

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

                           EXTENDED RESULT CODES

  Type:                  Configuration

  Format:                AT [cmds] Wn [cmds]

  Description:           Enables selection of additional result codes
                         when S95=0; otherwise, S95 takes precedence.

        Command                              Function

          W0             Report DTE speed

          W1             Report result code

          W2             Report DCE speed

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables flow control options

    Command                              Function

      &K0        Flow control disabled

      &K3        RTS/CTS flow control enabled

      &K4        XON/XOFF flow control enabled

      &K5        Transparent XON/XOFF flow control enabled

      &K6        XON/XOFF and RTS/CTS flow control enabled

                            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)

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports product code

       I1        Reports hardware variation code

       I2        Reports internal code

       I3        Reports software revision number

       I4        Reports product feature

                                TEST MODES

  Type:          Immediate

  Format:        AT [cmds] &Tn

  Description:   Selects test options

    Command                              Function

      &T0        End current test

      &T1        Begin local analog loopback test

                              TRELLIS CODING

  Type:          Configuration

  Format:        AT [cmds] &Un [cmds]

  Description:   Enables/disables trellis coding

    Command                              Function

      &U0        Trellis coding enabled

      &U1        Trellis coding disabled

                          Extended AT Command Set

                 AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode and fallback/fall-forward

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled

      %E2        Auto-fallback/fall-forward enabled

      %E3        Fast hang-up

                                BREAK TYPE

  Type:                     Configuration

  Format:                   AT [cmds] \Kn [cmds]

  Description:              Configures action of break signal

     Command        Break from DTE      Break from      Break from remote
                   during NORMAL or    modem during       modem during
                       MNP mode        DIRECT mode        NORMAL mode

       \K0         Online command     Send break to    Buffers cleared,
                   mode enabled,      remote modem,    break sent to DTE
                   send no break to   online command
                   remote modem       mode enabled

       \K1         Break sent to      Send break to    Buffers cleared,
                   remote modem and   remote modem,    break sent to DTE
                   buffered cleared   online command
                                      mode enabled

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

       \K3         Send break to      Send break to    Break sent
                   remote modem       remote modem,    immediately to DTE
                   immediately        online command
                                      mode enabled

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

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

                            S(status) -REGISTERS

                         CONNECTION FAILURE CODES

  Type:               Register

  Format              AT [cmds] S86? [cmds]

  Description:        Reports codes which correspond to the possible
                      causes of a connection failure

       Value                                Meaning

         0            Normal hang up

         4            Carrier signal lost

         5            No error-control detected for remote modem during
                      feature negotiation

         6            Remote modem failed to respond to feature
                      negotiation

         9            No common protocol found

         12           No failure - remote modem disconnected normally

         13           Remote modem failed to respond after 10
                      re-transmissions same message

         14           Violation of negotiated protocol caused failure

         20           Long space disconnect time limit reached

                              DCE LINE SPEED

  Type:                Register

  Format               AT [cmds] S37=n [cmds]

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

       Command                              Function

        S37=0          Speed of last connection

        S37=3          Connect at 300bps

        S37=4          Connect at 1200bps

        S37=6          Connect at 2400bps

        S37=7          Connect at 4800bps

        S37=8          Connect at 7200bps

        S37=9          Connect at 9600bps

       S37=10          Connect at 12.0Kbps

       S37=11          Connect at 14.4Kbps

       S37=12          Connect at 28.8Kbps

                              V.34 DATA RATE

  Type:            Register

  Format           AT [cmds] S34=n [cmds]

  Range            0-11

  Description:     Sets the maximum bit rate for V.34. Default is S34=11
                   (28.8Kbps)

                             V.34 SYMBOL RATE

  Type:            Register

  Format           AT [cmds] S35=n [cmds]

  Range            0-5

  Description:     Sets the minimum baud rate for V.34. Default is S35=0
                   (2400bps)

                            AT Voice Command Set

                                          RECORDING GAIN

  Type:               Immediate

  Format:             AT [cmds] #RG=hhhh [cmds]

  Default:            7FFF

  Range:              0000 - 7FFF

  Unit:               Unidentified (hexadecimal)

  Description:        Sets the voice recording gain level

                             SILENCE DETECTION

  Type:          Configuration

  Format:        AT [cmds] #VSD=n [cmds]

  Description:   Enables/disables voice receive mode silence detection.

  Note:          Function not supported by modem

                               VOICE DEVICE

  Type:                  Configuration

  Format:                AT [cmds] #VLS=n [cmds]

  Description:           Selects the I/O device for the DSP chip.

  Note:                  This modem may not support all options listed
                         below. The #VLS? Command will display the
                         available options.

        Command                              Function

         #VLS=0          Telephone line and handset used for voice I/O.

         #VLS=1          Telephone handset used for voice I/O.

         #VLS=2          Internal speaker only used for voice I/O.

         #VLS=3          External microphone only used for voice I/O.

         #VLS=4          Telephone line and handset used for voice I/O;
                         internal speaker enabled.

         #VLS=6          Speakerphone used for voice I/O.

                      VOICE - LOCAL SERIAL PORT SPEED

  Type:           Configuration

  Format:         AT [cmds] #BDR=n [cmds]

  Range:          0-48

  Unit:           2400 baud (rate = n * 2400)

  Description:    Sets the speed of the local serial port when in voice
                  mode.

                          VOICE RING DETECT TIME

  Type:                  Configuration

  Format:                AT [cmds] #VRN=n [cmds]

  Default:               Unidentified

  Range:                 0-255

  Unit:                  10ms

  Description:           Sets the maximum time the modem will wait for
                         the remote station to ring before it assumes
                         that it went off-hook before it rang.

                                       VOICE SAMPLE QUALITY

  Type:               Configuration

  Format:             AT [cmds] #VBS=n [cmds]

  Description:        Selects the number of bits per sample that the modem records.

  Note:               Modem only supports 4 bits per sample in ADPCM encoding.

                            VOICE SAMPLING RATE

  Type:          Configuration

  Format:        AT [cmds] #VSR=n [cmds]

  Description:   Sets the sampling rate used when recording voice
                 signals.

  Note:          Modem only supports a sampling rate to 8000Hz

                       VOICE SILENCE DETECTION TIME

  Type:           Configuration

  Format:         AT [cmds] #VSP=n [cmds]

  Default:        55

  Range:          0 - 255

  Unit:           .1 second

  Description:    Sets the minimum amount of silence that the modem will
                  detect.

