Copyright 1993 by U.S. Robotics, Inc.
8100 North McCormick Boulevard
Skokie, Illinois  60076-2999



SPORTSTER 14,400 and
SPORTSTER 14,400 FAX
CCITT V.32 bis with V.42 bis
14,400 to 300 BPS MODEM



COMMAND
SUMMARY****************************************************

A         Manual Answer: go off hook in answer mode.
          Pressing any key aborts the operation.

A/        Re-execute the last command; use to redial. Does
          not take AT or <Enter>.

Any key   Abort off-hook dial/answer operation and hang up.

AT        Required command prefix, except with A/ and +++.
          Use alone to test for OK result code.

Bn        U.S./CCITT Answer sequence.
          B0   CCITT answer sequence--Default
          B1   U.S. answer tone

Dn        Dial the specified phone number. Include any of
          the following options.
          P    Pulse (rotary) dial--Default
          T    Tone dial
          ,    (Comma) Two-second pause
          ;    (Semicolon) Return to Command mode after
               dialing
          "    (Quotation mark) Dial the letters that follow
          !    (Exclamation point) Flash the switch hook
          @    Dial, wait for quiet answer, and continue
          W    Dial, wait for another dial tone, and
               continue
          R    Reverse frequencies

DSn       Dial the phone number string stored in NVRAM at
          position n.

En        Command mode local echo. See DIP switch 4.
          E0   Echo OFF
          E1   Modem displays keyboard commands

Fn        Online local echo.
          F0   Echo ON
          F1   Echo OFF--Default

Hn        ON/OFF hook control.
          H0   Hang up (go on hook)
          H1   Go off hook

In        Information display.
          I0   Three-digit product code
          I1   Results of ROM checksum
          I2   Results of RAM checksum
          I3   Reserved
          I4   Display current modem settings
          I5   Display nonvolatile memory (NVRAM) settings
          I6   Reserved
          I7   Return product configuration

Mn        Speaker (Audio Monitor) operation.
          M0   Speaker always OFF
          M1   Speaker ON until CONNECT--Default
          M2   Speaker always ON
          M3   Speaker ON after dial, through CONNECT

On        Return online.
          O0   Return online
          O1   Return online and retrain

Qn        Result Codes displayed/suppressed. See DIP switch
          3.
          Q0   Display result codes
          Q1   Quiet mode; no result codes
          Q2   Result codes only in Originate mode

Sr=n      Set register r to n.

Sr?       Show contents of S-Register r.

Vn        Verbal/numeric result codes. See DIP switch 2.
          V0   Numeric codes
          V1   Verbal codes

Xn        Result code set. Default is X1.

                                        Xn Setting
          Result Code             X0   X1   X2   X3   X4
          --------------------------------------------------
          0/OK                    +    +    +    +    +
          1/CONNECT               +    +    +    +    +
          2/RING                  +    +    +    +    +
          3/NO ERROR              +    +    +    +    +
          4/ERROR                 +    +    +    +    +

          5/CONNECT                    +    +    +    +
          6/NO DIAL TONE                    +         +
          7/BUSY                                 +    +
          8/NO ANSWER                            +    +

          10/CONNECT 2400              +    +    +    +
          13/CONNECT 9600              +    +    +    +
          18/CONNECT 4800              +    +    +    +
          20/CONNECT 7200              +    +    +    +
          21/CONNECT 12000             +    +    +    +
          25/CONNECT 14400             +    +    +    +

         ---------------------------------------------------
         Functions

                                            Xn Setting
          Result Code                 X0   X1   X2   X3   X4
          --------------------------------------------------
          Adaptive Dialing                      +    +    +
          Wait for 2nd Dial Tone (W)                 +    +
          Wait for Answer @                          +    +
          Fast Dial                             +         +


Z         Reset to software defaults.

&An       Enable/disable ARQ result codes.
          &A0  ARQ result codes disabled
          &A1  ARQ result codes enabled--Default
          &A2  V.32 modulation indicator added
          &A3  Protocol indicators added--LAPM/MNP/NONE
               (error control) and V42BIS/MNP5 (data
               compression)

&Bn       Modem's serial port rate.
          &B0  Variable, follows connection rate--Default
          &B1  Fixed serial port rate
          &B2  Fixed in ARQ mode, variable in non-ARQ mode

&Cn       Carrier Detect (CD) signal.
          C0   CD override
          &C1  Normal CD operations

&Dn       Data Terminal Ready operations.
          &D0  DTR override
          &D1  Reserved
          &D2  Normal DTR operations

&F        Load the read-only (non-programmable) factory
          settings.

&Hn       Transmit Data flow control.
          &H0  Flow control disabled--Default
          &H1  Hardware flow control, Clear to Send (CTS)
          &H2  Software flow control, XON/XOFF
          &H3  Hardware and software control

&In       Received Data software flow control.
          &I0   Flow control disabled--Default
          &I1   Your XON/XOFF signals go to your modem and
                to the remote system
          &I2   Your XON/XOFF signals go to your modem only
          &I3-4 Hewlett Packard: Host mode (&I3), Terminal
                mode (&I4)
          &I5   ARQ mode--same as &I2; non-ARQ mode--look
                for incoming XON/XOFF

&Kn       Data compression enabled/disabled.
          &K0  Data compression disabled
          &K1  Auto enable/disable--Default
          &K2  Data compression enabled
          &K3  MNP5 compression disabled

&Mn       Normal or Error Control (ARQ) mode (1200 bps and
          higher).
          &M0   Normal mode, error control disabled
          &M1-3 Reserved
          &M4   Normal/ARQ--Default
          &M5   ARQ mode only

&Nn       Data rate, phone line interface.
          &N0  Variable rate--Default
          &N1  300 bps
          &N2  1200 bps
          &N3  2400 bps
          &N4  4800 bps
          &N5  7200 bps
          &N6  9600 bps
          &N7  12,000 bps
          &N8  14,400 bps

&Rn       Received Data hardware flow control, Request to
          Send (RTS).
          &R0  Reserved
          &R1  The modem ignores RTS--Default
          &R2  Received Data to computer only on RTS

&Sn       Data Set Ready (DSR) operations.
          &S0  DSR override; always ON--Default
          &S1  Modem controls DSR

&Tn       Test modes. See Appendix F for testing
          instructions.
          &T0  End testing
          &T1  Analog Loopback
          &T2  Reserved
          &T3  Local Digital Loopback
          &T4  Enable Remote Digital Loopback
          &T5  Deny Remote Digital Loopback--Default
          &T6  Initiate Remote Digital Loopback
          &T7  Remote Digital with self test and error
detector
          &T8  Analog Loopback with self test and error
detector

&W   Write current configuration to NVRAM.

&Yn  Break Handling.
     &Y0  Destructive, but don't send Break
     &Y1  Destructive, expedited--Default
     &Y2  Nondestructive, expedited
     &Y3  Nondestructive, unexpedited

&Zn=s     Write phone number string s to NVRAM at position
n.

+++  Escape to Online-command mode or, if S14=1, hang up
     and escape to Command mode.


DIP
SWITCHES****************************************************
*

     Factory
Switch    Setting   Function
------------------------------------------------------------
-
1    UP   Data Terminal Ready (DTR) Operations
          UP   Normal DTR operations: computer or
               terminal must provide DTR signal for
               modem to accept commands; dropping DTR
               terminates a call
          DOWN DTR always ON (Override)

2    UP   Verbal/Numeric Result Codes
          UP   Verbal (word) results
          DOWN Numeric results

3    DOWN Result Code Display
          UP   Results suppressed (Quiet mode)
          DOWN Results enabled

4    UP   Command Mode Local Echo
          UP   Keyboard commands displayed
          DOWN Display of commands suppressed

5    DOWN Auto Answer
          UP   Modem answers on first ring
          DOWN Auto answer suppressed

6    UP   Carrier Detect (CD) Operations
          UP   Modem sends CD signal when it connects
               with another modem, drops CD on disconnect
          DOWN CD always ON (Override)

7    UP   Power-on and ATZ Reset Defaults
          UP   Load NVRAM defaults
          DOWN Load factory (ROM) defaults

8    DOWN "AT" Command Set Recognition
          UP   Recognition disabled (Dumb Mode)
          DOWN Recognition enabled (Smart Mode)


S-
REGISTERS***************************************************
*****

Register* Default        Function
------------------------------------------------------------
------

S0        See DIP        Sets the number of rings on which
          Switch 5  to answer in Auto Answer mode. When
                    DIP switch 5 is UP, the modem
                    answers on the first ring; S0=1 has
                    the same effect. When DIP switch 5
                    is DOWN (factory setting), Auto
                    Answer is disabled; S0=0 (modem
                    answers on 0 rings, or never) has
                    the same effect.

S1        0         Counts and stores the number of
                    rings from an incoming call.

S2        43        Stores the ASCII decimal code for
                    the escape code character. Default
                    character is "+". A value of 128-255
                    disables the escape code.

S3        13        Stores the ASCII decimal code for
                    the Carriage Return character.
                    Valid range is 0-127.

S4        10        Stores the ASCII decimal code for
                    the Line Feed character. Valid range
                    is 0-127.

S5        8         Stores the ASCII decimal code for
                    the Backspace character. A value
                    of 128-255 disables the Backspace
                    key's delete function.

S6        2         Sets the number of seconds the modem
                    waits before dialing, the minimum
                    value for which is 2. If set to X2
                    or X4, the modem dials as soon as
                    it detects a dial tone (fast dials).

S7        60        Sets the number of seconds the modem
                    waits for a carrier. May be set for
                    much longer duration if, for example,
                    the modem is originating an interna-
                    tional connection.

S8        2         Sets the duration, in seconds, for
                    the comma pause option.

S9        6         Sets the required duration, in tenths
                    of a second, of the remote modem's
                    carrier signal before recognition by
                    the Sportster.

S10       7         Sets the duration, in tenths of a
                    second, that the modem waits after
                    loss of carrier before hanging up.
                    If set to 255, the modem does not
                    hang up when it loses carrier.

S11       70        Sets the duration and spacing, in
                    milliseconds, of dialed Touch-Tones.

S12       50        Sets the duration, in fiftieths of
                    a second (20 msec. units), of the
                    guard time for the +++ escape code
                    sequence.

S13       0         S13=64 disables MNP level 3 (used
                    for testing Level 2).

S14       0         If set to 1, the modem hangs up on
                    receipt of the escape code, returns
                    to Command mode and sends the NO
                    CARRIER result code.

S15       0         Bit-mapped. See Appendix B.

S16       0         S16=2 used for Dial Test, factory
                    testing.

S18       0         Test timer, disabled when S18 is
                    set to 0. Used to set the duration,
                    in seconds, of modem diagnostics,
                    before the modem automatically
                    times out and terminates the test.

S19       0         Sets the duration, in minutes, for
                    the Inactivity Timer, disabled when
                    S19=0.

S21       10        Sets the length of Breaks, in
                    10-millisecond units, that the
                    modem sends to the computer during
                    MNP calls.

S22       17        Stores the ASCII decimal code for
                    the XON character. Valid range is
                    0-127.

S23       19        Stores the ASCII decimal code for
                    the XOFF character. Valid range is
                    0-127.

S25       5         Sets the duration, in hundredths of
                    a second, that DTR must be dropped
                    for the modem to respond.

S27       0         Bit-mapped. See Appendix B.

S28       8         Sets the duration, in tenths of a
                    second,of the V.21/V.23 fallback
                    delay.

S34       6         Bit-mapped. See Appendix B.

S38       0         Sets an optional delay, in seconds,
                    before a forced hang-up and clearing
                    of the Transmit buffer when DTR
                    drops during an ARQ call. Has no
                    effect if ATH is used to terminate
                    a call.

*Gaps in the numeric sequence indicate reserved registers.


RS-232C INTERFACE PIN
DEFINITIONS************************************

                                   Signal
     DB-25     DB-9 Circuit     Function          Source
     -------------------------------------------------------
------
     1    -    AA     Chassis Ground    Both
     2    3    BA     Transmitted Data  Terminal
     3    2    BB     Received Data          Modem
     4    7    CA     Request to Send   Terminal
     5    8    CB     Clear to Send          Modem
     6    6    CC     Data Set Ready    Modem
     7    5    AB     Signal Ground          Both
     8    1    CF     Carrier Detect    Modem
     12   -    SCF    Speed Indicate    Modem
     20   4    CD     Data Terinal Ready     Terminal
     22   9    CE     Ring Indicate          Modem


DEFAULT
SETTINGS****************************************************
*

The following table lists the defaults stored in nonvolatile
memory
(NVRAM) when the modem is shipped.

     Setting        Function
     -------------------------------------------------------
----

     B0        CCITT answer sequence
     F1        Online local echo disabled
     M1        Speaker ON during dial through CONNECT
     P         Pulse dialing type
     X1        All result codes except No Dial Tone and Busy

     &A1       ARQ result codes enabled
     &B0       Computer/modem rate follows connection rate
     &G0       Guard tone disabled
     &H0       Transmit Data flow control disabled
     &I0       Received Data software flow control disabled

     &K1       Data compression auto enabled/disabled
     &M4       Normal/ARQ mode
     &N0       Variable connection rates
     &P0       U.S. & Canada pulse dial ratio
     &R1       Modem ignores Request to Send (RTS)

     &S0       Data Set Ready (DSR) override
     &T5       Deny remote digital loopback
     &Y1       Breaks, computer to modem, destructive and
               expedited
     &Zn=s          Stored phone number s at position n--
Blank

     S2=43          ASCII decimal escape code character
     S3=13          ASCII decimal Carriage Return
     S4=10          ASCII decimal Line Feed
     S5=8      ASCII decimal Backspace
     S6=2      Dial wait time, sec.
     S7=60          Carrier wait time, sec.
     S8=2      Dial command pause (,) time, sec.
     S9=6      Carrier recognition wait time, 1/10th sec.
     S10=7          Carrier loss wait time, 1/10th sec.
     S11=70         Touch-tone duration/spacing, msec.
     S12=50         Escape code sequence guard time, 1/50th
sec.
     S19=0          Inactivity timer disabled
     S21=10         Received Break length, 1/100th sec.
     S22=17         ASCII decimal XON character
     S23=19         ASCII decimal XOFF character
     S28=8          V.21/V.23 fallback delay, 1/10th sec.
     S38=0          Disconnect wait time, sec.

     19.2K bps Bit rate
     7 bits         Word Length
     Even      Parity

