
VEN-TEL, INC.

EC2400-33

Card Type                    Modem (synchronous/asynchronous)
Chipset                      Unidentified
Maximum Data Rate            2400bps
Data Bus                     Serial
Data Modulation              Bell 103A/212A

                             ITU-T V.22, V.22bis
Error Correction/Compression MNP5, X.PC

[Image]

                                CONNECTIONS

       Function          Label              Function              Label

  Line out                    CN1       RS-232/422                 CN4

  Line in                     CN2       Power switch               SW1

  DC power                    CN3       Front panel switch         SW4

            Note: When pressed once, the front panel switch is a hook
            control. When pressed twice, the modem auto-dials the stored
            number.

                        USER CONFIGURABLE SETTINGS

                  Setting                     Label          Position

  DTR normal                                  SW2/1            Off

  DTR forced high                             SW2/1             On

  Modem displays verbose result codes         SW2/2            Off

  Modem displays numeric result codes         SW2/2             On

  Result codes enabled                        SW2/3             On

  Result codes disabled                       SW2/3            Off

  Command echo enabled                        SW2/4            Off

  Command echo disabled                       SW2/4             On

  Auto-answer enabled                         SW2/5            Off

  Auto-answer disabled                        SW2/5             On

  CD normal (terminal dialer disabled)        SW2/6            Off

  CD forced high (terminal dialer             SW2/6             On
  disabled)

  CTS, DSR, and CD low when idle, high        SW2/6            Off
  when connected (terminal dialer enabled)

  CTS, DSR, and CD normal (terminal dialer    SW2/6             On
  enabled)

                    USER CONFIGURABLE SETTINGS (CONT)

                    Setting                       Label       Position

  Speaker enabled                                 SW2/7          On

  Speaker disabled                                SW2/7         Off

  Command sets enabled                            SW2/8          On

  Command sets disabled                           SW2/8         Off

  Switch configuration used                       SW2/9         Off

  NVRAM configuration used                        SW2/9          On

  AT command set enabled                          SW2/10        Off

  Ven-Tel command set enabled                     SW2/10         On

  Factory configured - do not alter               SW3/1     Unidentified

  Factory configured - do not alter               SW3/2     Unidentified

  Factory configured - do not alter               SW3/3     Unidentified

  Factory configured - do not alter               SW3/4     Unidentified

  Factory configured - do not alter               SW3/5     Unidentified

                             DIAGNOSTIC LED(S)

    LED       Color      Status                  Condition

    HS        Green        On          Modem is operating at 2400bps

    HS         Red         On          Modem is operating at 1200bps

    HS         N/A        Off           Modem is operating at 300bps

    AA         Red         On               Auto-answer enabled

    AA         Red        Off               Auto-answer disabled

    AA         Red      Blinking              Phone is ringing

    CD         Red         On             Carrier signal detected

    CD         Red        Off           Carrier signal not detected

    OH         Red         On                Modem is off-hook

    OH         Red        Off                 Modem is on-hook

    RD         Red         On             Modem is receiving data

    RD         Red        Off           Modem is not receiving data

    SD         Red         On            Modem is transmitting data

    SD         Red        Off          Modem is not transmitting data

    TR         Red         On                DTR signal is high

    TR         Red        Off                DTR signal is low

   MR/EC      Green        On               Modem is connected in
                                           error-correcting mode

   MR/EC       Red         On                   Power is on

   MR/EC       Red      Blinking           Modem is in test mode

   MR/EC       Red        Off                   Power is off

                        SUPPORTED STANDARD COMMANDS

                             Basic AT Commands

  +++, comma, A/

  A, B, E, F, H, I, M, P, Q, R, T, V, X, Y, Z

  &C, &D, &F, &G, &L, &M, &P, &R, &T, &W, &X, &Z

                           Extended AT Commands

  \C, \G, \J, \O, \Q, \T, \V, \X, \Y, \Z

  %A, %C

                                S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S21,
  S22, S23, S25, S26, S27

            Note: See MHI documentation for complete information.

                         Proprietary AT Command Set

                          BIT-MAPPED REGISTER S13

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

  Default:            Unidentified

  Range:              0 - 255

  Description:        Controls extended result codes and data format.

  Note:               This register is only used when in switch
                      configuration mode.

     Bit        Value                       Function

      0           N/A   Not used.

      1              0  Extended result codes disabled.

                    1   Extended result codes enabled.

      2              0  Parity disabled.

                    1   Parity enabled.

      3              0  Odd parity enabled.

                    1   Even parity enabled.

      4              0  Data word is 7 bits.

                    1   Data word is 8 bits.

      5           N/A   Not used.

      6           N/A   Not used.

      7              0  SPACE parity enabled.

                    1   MARK parity enabled.

                          BIT-MAPPED REGISTER S14

  Format:               AT [cmds] S14=n [cmds]

  Default:              Unidentified

  Range:                0-255

  Unit:                 Bit-mapped

  Description:          Controls auto-answer, echo, result codes and
                        display, dial mode, and answer/originate mode.

   Bit       Value                          Function

    0              0    Auto-answer disabled at power-up (switch
                        configuration only).

                        Auto-answer enabled at power-up (switch
                        configuration only).

    1               0   Command echo disabled.

                   1    Command echo enabled.

    2               0   Result codes enabled.

                   1    Result codes disabled.

    3               0   Display result codes in numeric format.

                   1    Display result codes in verbose format.

    4               0   Command sets enabled.

                   1    Command sets disabled.

    5               0   Tone dial enabled.

                   1    Pulse dial enabled.

    6               0   Speaker disabled (switch configuration only).

                   1    Speaker enabled until carrier detected (switch
                        configuration only).

                        Config. Mode                Function

    7               0   NVRAM          Answer mode enabled.

                    1   NVRAM          Originate mode enabled.

                    0   Switch         Speaker not always enabled.

                   1    Switch         Speaker always enabled.

                          BIT-MAPPED REGISTER S15

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

  Default:            Unidentified

  Range:              0 - 255

  Description:        Controls data speed, answer/originate mode, and
                      duplexing.

  Note:               This register is only used when in switch
                      configuration mode.

     Bit        Value                       Function

     1, 0           00  Modem will operate at 2400bps.

                    01  Modem will operate at 300bps.

                    10  Modem will operate at 110bps.

                   11   Modem will operate at 1200bps.

      2              0  Modem is in answer mode.

                    1   Modem is in originate mode.

      3              0  Modem uses half-duplex.

                    1   Modem uses full-duplex.

     5, 4           00  Modem will operate at 2400bps.

                    01  Modem will operate at 300bps.

                    10  Modem will operate at 110bps.

                   11   Modem will operate at 1200bps.

                           COMMAND SET - VEN-TEL

  Type:          Immediate

  Format:        AT [cmds] %V

  Description:   Enters the Ven-Tel command set mode.

                               CONNECT MODE

  Type:              Configuration

  Format:            AT [cmds] \Nn [cmds]

  Description:       Controls the type of connection the modem will make.

      Command                              Function

        \N0          Normal mode enabled.

        \N1          Direct mode enabled.

        \N2          MNP reliable mode enabled.

        \N3          MNP auto-reliable mode enabled.

        \N4          X.PC auto-reliable mode enabled.

        \N5          MNP and X.PC auto-reliable answer mode, MNP
                     auto-reliable originate mode.

           DATA SET READY (DSR) AND CLEAR TO SEND (CTS) SIGNALS

  Type:                  Configuration

  Format:                AT [cmds] \Dn [cmds]

  Description:           Controls the behaviour of the DSR and CTS
                         signals.

        Command                              Function

          \D0            DSR and CTS forced high.

          \D1            CTS follows CD. If &C is not set to 1 then DSR
                         also follows CD, otherwise it follows OH.

          \D2            DSR and CTS follow CD.

          \D3            DSR follows answer tone, CTS forced high.

                                   DIAL

  Type:                  Immediate

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

  Description:           Dials the telephone number indicated 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.

           DM            Attempt to make a MNP mode connection. Modem
                         will fall back to normal mode.

           DP            Pulse dialing enabled.

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

           DS            Dial stored telephone number.

           DT            Tone dialing enabled.

           DV            Attempt to make a peer-to-peer mode X.PC
                         connection. Modem will fall back to normal mode.

           DW            Dialing resumed following dial tone detection.

           DX            Attempt to make a network mode X.PC connection.
                         Modem will fall back to normal mode.

           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 Quiet 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.

                           DISPLAY CONFIGURATION

  Type:          Immediate

  Format:        AT [cmds] \S [cmds]

  Description:   Displays the settings of selected commands.

                            DISPLAY S-REGISTERS

  Type:          Immediate

  Format:        AT [cmds] %R [cmds]

  Description:   Displays the settings of all S-registers.

                                  ON-LINE

  Type:              Immediate

  Format:            AT [cmds] On

  Description:       Instructs the modem to return to on-line state.

      Command                              Function

        O0           Return to on-line state.

        O1           Return to on-line state and end remote digital
                     loopback test in progress.

        O2           Return to on-line state and initiate remote digital
                     loopback test.

                           X.PC CHARACTER DELAY

  Type:                  Register

  Format:                AT [cmds] S50=n [cmds]

  Default:               Unidentified

  Range:                 10 - 255

  Unit:                  1 mS

  Description:           Sets the maximum delay time between the modem
                         receiving a character from the DTE and the modem
                         transmitting an X.PC block.

                              X.PC DISCONNECT

  Type:                  Immediate

  Format:                AT [cmds] %H [cmds]

  Description:           Disconnects from the X.PC network connection
                         while maintaining the physical connection.

                       MISCELLANEOUS TECHNICAL NOTE

            Bits of bit-mapped registers that are not used may be either
            0 or 1.

                      Proprietary Ven-Tel Command Set

                           CLEAR STORED NUMBERS

  Type:          Immediate

  Format:        C

  Description:   Clears all stored numbers.

                             COMMAND SET - AT

  Type:          Configuration

  Format:        Q

  Description:   Returns to the AT command set.

                                   DIAL

  Type:                  Immediate

  Format:                K

  Description:           The user will be prompted for a number to dial.
                         The following modifiers may be used.

        Command                              Function

           M             Attempt to make a MNP mode connection. Modem
                         will fall back to normal mode.

           V             Attempt to make a peer-to-peer mode X.PC
                         connection. Modem will fall back to normal mode.

           X             Attempt to make a network mode X.PC connection.
                         Modem will fall back to normal mode.

           &             Dialing resumed following dial tone detection.

           ,             Dialing paused for 2 seconds.

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

           %             Dialing paused for 5 seconds.

                            DIAL STORED NUMBER

  Type:          Immediate

  Format:        n

  Default:       N/A

  Range:         1 - 9

  Unit:          N/A

  Description:   Dials stored number n.

                          DISPLAY STORED NUMBERS

  Type:          Immediate

  Format:        D

  Description:   Displays all stored numbers.

                                   HELP

  Type:          Immediate

  Format:        H

  Description:   Displays a list of all commands.

                               LOGOFF STRING

  Type:                  Configuration

  Format:                L

  Description:           Sets a string that the modem will disconnect
                         upon receiving. Control characters may be
                         entered by preceding the letter with a caret.

                                  REDIAL

  Type:          Immediate

  Format:        R

  Description:   Redials the last number dialed.

                             REDIAL REPEATEDLY

  Type:                  Immediate

  Format:                F

  Description:           Redials the last number dialed up to ten times
                         with an increasingly long pause between
                         attempts.

                                SET OPTIONS

  Type:          Configuration

  Format:        O

  Description:   Displays a menu of options that may be set.

                           STORE NUMBER IN NVRAM

  Type:                  Configuration

  Format:                Sn

                         [prompt]: <#>RaLb

  Description:           The user will be prompted to enter the number to
                         store. At the end of this number, the user may
                         enter the R and L options. The modem will redial
                         this number a times, and if this connection
                         still can not be made, it will proceed to the
                         number stored in memory location b.

               MISCELLANEOUS TECHNICAL NOTE

            AT commands may still be entered in this mode.

