
U. S. ROBOTICS, INC.

COURIER V.32

Card Type                    Modem (synchronous/asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            9600bps
Data Bus                     External
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.32
Error Correction/Compression MNP5

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  Power switch                  SW1      Line out                   CN3

  DC power                      CN1      RS-232/422                 CN4

  Line in                       CN2

                        USER CONFIGURABLE SETTINGS

                      Setting                         Label      Position

  DTR forced high                                     SW2/1        On

  DTR normal                                          SW2/1        Off

  Verbose result codes                                SW2/2        Off

  Numeric result codes                                SW2/2        On

  Result code display enabled                         SW2/3        On

  Result code display disabled                        SW2/3        Off

  Local echo enabled                                  SW2/4        Off

  Local echo disabled                                 SW2/4        On

  Auto answer disabled                                SW2/5        On

  Auto answer enabled                                 SW2/5        Off

  CD signal normal                                    SW2/6        Off

  CD forced high                                      SW2/6        On

  Result codes displayed during originate and         SW2/7        Off
  answer modes

  Result codes not displayed during answer mode       SW2/7        On
  when SW1/3 is On

  Smart mode                                          SW2/8        On

  Dumb mode                                           SW2/8        Off

  Modem goes on-hook, command mode enabled, OK      SW2/9        On
  reported

  Modem remains off-hook, command mode enabled,       SW2/9        Off
  NO CARRIER reported

  Load configuration from NVRAM                       SW2/10       Off

  Load configuration from ROM                         SW2/10       On

                  DTE/DCE MODE SELECTION

  Setting      SW3/1       SW3/2      SW3/3       SW3/4

  DCE mode      Off         Off        Off         Off

  DTE mode      On          On          On          On

                             DIAGNOSTIC LED(S)

   LED       Color      Status                   Condition

    HS        Red         On          Modem is operating at 2400bps or
                                                   faster

    HS        Red         Off         Modem is operating at slower than
                                                  2400bps

    AA        Red         On                Auto-answer enabled

    AA        Red         Off               Auto-answer disabled

    CD        Red         On        Carrier signal detected or when SW2/6
                                                   is on

    CD        Red         Off           Carrier signal not detected

    OH        Red         On                 Modem is off-hook

    OH        Red         Off                 Modem is on-hook

    RD        Red       Blinking          Modem is receiving data

    RD        Red         Off           Modem is not receiving data

    SD        Red       Blinking         Modem is transmitting data

    SD        Red         Off          Modem is not transmitting data

    MR        Red         On                    Power is on

    MR        Red         Off                   Power is off

    MR        Red       Blinking        During test mode, retraining,
                                         including online fallback

    RS        Red         On                 RTS signal is high

    RS        Red         Off                RTS signal is low

    CS        Red         On            CTS signal is high and during
                                              synchronous mode

    CS        Red         Off        CTS signal is low, synchronous mode
                                                  disabled

   ARQ        Red         On              Error correction enabled

   ARQ        Red         Off            Error correction disabled

   ARQ        Red       Blinking         Error correction activated

   SYN        Red         On        AT&M3 is set or AT&M1 and synchronous
                                                mode is set

   SYN        Red         Off          Modem not in synchronous mode

                    SUPPORTED COMMAND SET

                      Basic AT Commands

  AT, +++, A/

  A, E, F, H, M, O, P, Q, S, T, V, X

  &F, &G, &J, &P, &W, &X, &Z

                         S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S26

  Note: See MHI Help file for full command documentation.

                         Proprietary AT Command Set

                                   ABORT

  Type:               Immediate

  Format:             <any key>

  Description:        Aborts current command issued; dial, repeat mode
                      (>), and repeat command (A>)

                          BIT-MAPPED REGISTER S13

  Format           AT [cmds] S13=n [cmds]

  Default:         0

  Range:           0-255

  Unit:            Bit-mapped

  Description:     Controls DTR reset, DTR dialing, reset dialing, and
                   MNP3.

   Bit    Value                           Function

    0          0   DTR normal

              1    Reset on low DTR

    1          0   Normal auto answer operation

              1    When ring is received, enter originate and listen for
                   answer tone

    2          0   Pause 250msec. Before displaying result codes

              1    Immediate result code display

    3          0   DTR dialing disabled

              1    DTR dialing enabled

    4          0   Reset dialing disabled

              1    Reset dialing enabled

    5         0    Not used

    6          0   MNP 3 enabled

              1    MNP 3 disabled

    7          0   Hardware reset disabled

              1    Hardware reset enabled

                          BIT-MAPPED REGISTER S15

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

  Default:              0

  Range:                0-255

  Unit:                 Bit-mapped

  Description:          Controls HST high frequency equalization, online
                        fallback, back channel, non-error-correcting mode
                        buffer, MNP4, and BS/DEL switch, MNP compliance,
                        and Interbridge network compatibility.

   Bit       Value                          Function

    0               0   HST high frequency equalization enabled

                   1    HST high frequency equalization disabled

    1               0   Online fallback enabled

                   1    Online fallback disabled

    2               0   450bps back channel enabled

                   1    450bps back channel disabled

    3               0   Non-error-correcting mode transmit buffer set to
                        1.5KB
                   1
                        Non-error-correcting mode transmit buffer set to
                        128 bytes

    4               0   MNP 4 enabled

                   1    MNP 4 disabled

    5               0   Use backspace key for delete disabled

                   1    Use backspace key for delete enabled (May cause
                        software incompatibility)

    6               0   MNP normal

                   1    MNP adjusted for non compliant modems

    7               0   Interbridge network compatibility disabled

                   1    Interbridge network compatibility enabled

                               BREAK LENGTH

  Type:            Register

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

  Default:         10

  Range:           Unidentified

  Unit:            10 ms

  Description:     Sets the length of error control mode breaks sent from
                   DCE to DTE

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Description:   Configures action of break signal

    Command                              Function

      &Y0        Break empties buffer

      &Y1        Break empties buffer and is sent immediately

      &Y2        Break does not empty buffer and is sent immediately

      &Y3        Send break with transmitted data

                               COMMPRESSION

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Controls data compression

    Command                              Function

      &K0         Data compression disabled

      &K1         Auto enable/disabled data compression

      &K2         Data compression enabled

                             CONNECTION SPEED

  Type:          Configuration

  Format:        AT [cmds] &Nn [cmds]

  Description:   Sets required connection speed

    Command                              Function

      &N0        Variable

      &N1        300bps

      &N2        1200bps

      &N3        2400bps

      &N4        4800bps

      &N5        7200bps

      &N6        9600bps

                           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 connected

                                   DIAL

  Type:                 Immediate

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

  Example:              ATDT 443-3388,,,1111;

  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

           P            Pulse dialing enabled

           T            Tone dialing enabled

           ,            Dialing paused for 2 seconds

           ;            Modem returned to command state after dialing.
                        Can only be placed at the end of the dial
                        command.

           !            Flash function initiated

           /            Pause for 125ms then proceed with dial string

           @            Dial, wait for quiet answer, then continue to
                        execute the rest of the dial string

           W            Dial, wait for second dial tone, then continue to
                        execute the rest of the dial string

           R            Answer mode enabled, originate mode disabled
                        following handshake initiation

                           DIAL - STORED NUMBER

  Type:          Immediate

  Format:        AT [cmds] DSn [cmds]

  Description:   Dial stored number from memory location n

                          DISCONNECT BUFFER DELAY

  Type:                  Register

  Format                 AT [cmds] S38=n [cmds]

  Default:               0

  Range:                 Unidentified

  Unit:                  1 second

  Description:           Sets maximum duration allowed during buffered
                         data calls for modem to perform clearing
                         functions after losing carrier-signal or
                         receiving a clear call signal from the remote
                         modem and before initiating hang-up process. A
                         value of 0 will allow the modem to hanging-up
                         after DTR drops.

                                 DSR TIMER

  Type:          Register

  Format:        AT [cmds] S24=n [cmds]

  Default:       0

  Range:         0-25

  Unit:          .01 second

  Description:   Sets the delay between DSR pulses, when &S1 is set

                           ERROR CORRECTION MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects active error correction protocols

    Command                              Function

      &M0        Normal mode only

      &M3        Continuos synchronous mode

      &M4        Auto-detect mode

      &M5        ARQ mode only

                           EXTENDED RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] &An [cmds]

  Description:   Selects extended result codes

    Command                              Function

      &A0        /ARQ result codes disabled

      &A1        /ARQ result codes enabled

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

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

  Default:       19

  Range:         11-127

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

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

  Default:       17

  Range:         11-127

  Unit:          ASCII

  Description:   Sets the character used to represent XON

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] &Hn [cmds]

  Description:   Sets type of flow control used by modem

    Command                              Function

      &H0        Flow control disabled

      &H1        CTS/RTS flow control enabled

      &H2        XON/XOFF flow control enabled

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

                             FLOW CONTROL TYPE

  Type:           Configuration

  Format:         AT [cmds] &Rn [cmds]

  Description:    Controls receive data hardware flow control and RTS
                  signals

    Command                              Function

      &R0         Delay RTS signal before sending CTS signal

      &R1         Modem ignores RTS

      &R2         Received data to DTE when RTS is on

                         FLOW CONTROL PASS-THROUGH

  Type:           Configuration

  Format:         AT [cmds] &In [cmds]

  Description:    Allows modem to act on and then transmit XON/XOFF
                  characters

    Command                              Function

      &I0         Software flow control disabled

      &I1         XON/XOFF pass-through enabled

      &I2         XON/XOFF pass-through disabled

      &I3         Host mode enabled, Hewlett Packard protocol

      &I4         Terminal mode enabled, Hewlett Packard protocol

      &I5         XON/XOFF to remote for non-ARQ link flow control
                  enabled

                               HELP SCREENS

  Type:                  Immediate

  Format:                AT <prefix>$

  Description:           Shows command help screens for all commands
                         beginning with the given prefix, or no prefix if
                         none is given.

        Command                              Function

           $             Shows command summary help screen

           &$            Shows extended command summary help screen

           D$            Shows dial command summary help screen

           S$            Shows S-register summary help screen

        <CTRL>-S         Stop/restart display of help screen

        <CTRL>-C         Cancel display of help screen

        <CTRL>-K         Cancel display of help screen

                             INACTIVITY TIMER

  Type:                  Register

  Format:                AT [cmds] S19=n [cmds]

  Default:               0

  Range:                 Unidentified

  Unit:                  1 minute

  Description:           Sets the length of time that the modem does not
                         receive information before it disconnects.

                                LEASED LINE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Controls lease line operation

    Command                              Function

      &L0         lease line operation disabled

      &L1         lease line operation enabled

                             LOCK SERIAL PORT

  Type:          Configuration

  Format:        AT [cmds] &Bn [cmds]

  Description:   Sets operation of serial port speed

    Command                              Function

      &B0        Serial speed follows connect speed

      &B1        Serial speed locked

      &B2        Serial speed locked in ARQ mode only

                           MODULATION SELECTION

  Type:                Register

  Format:              AT [cmds] S27=n [cmds]

  Description:         Controls the modulation for 300bps transmission

       Command                              Function

        S27=0          Bell103 only

        S27=1          ITU-T V.21, all calls answered in either Bell103
                       or V.21, originate calls in V.21

                                   PAUSE

  Type:                 Configuration

  Format:               AT [cmds] / [cmds]

  Description:          Command string execution is paused for 125ms

  Note:                 Multiple slashed can be used consecutively to add
                        up to the duration of delay desired.

                        REPEAT COMMAND CONTINUALLY

  Type:             Configuration

  Format:           AT [cmds] > [cmds]

  Description:      Causes modem to repeat command continually until <any
                    key> is pressed

  Note:             If used in the dial string, 10 attempts will be made.

                           REPEAT COMMAND STRING

  Type:                Configuration

  Format:              AT [cmds] A> [cmds]

  Description:         Causes modem to repeat continually last issued
                       command until <any key> is pressed

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays modem properties

    Command                              Function

       I0        Reports product code

       I1        Reports ROM checksum result

       I2        Reports RAM checksum result

       I3        Reports current call time or clock time

       I4        Reports current command settings

       I5        Reports current NVRAM settings

       I6        Reports current connections statistics

       I7        Reports product configuration

                                TEST MODES

  Type:          Register

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

  Description:   Selects modem test modes

    Command                              Function

     S16=0       Test mode disabled

     S16=1       Analog loopback test enabled

     S16=2       Dial test enabled

     S16=4       Test pattern enabled

     S16=5       Analog loopback test with test pattern enabled

     S16=8       Remote digital loopback enabled

                               TIME DISPLAY

  Type:          Immediate

  Format:        AT [cmds] Kn [cmds]

  Description:   Displays the current call time or clock time

    Command                              Function

       K0        Display length of last call

       K1        Display actual time

                                TRANSMITTER

  Type:          Configuration

  Format:        AT [cmds] Cn [cmds]

  Description:   Controls the transmitter

    Command                              Function

       C0         Transmitter disabled, receive only mode

       C1         Transmitter enabled

                           V.32 - HANDSHAKE TIME

  Type:          Register

  Format:        AT [cmds] S28=n [cmds]

  Default:       8

  Range:         0-255

  Unit:          .1 second

  Description:   Sets length of V.32 handshake

