You may enter a command line of up to 80 characters in upper  or lower case
with the first command in the line preceded by  an AT or at and the last
command followed by a carriage  return.

The notation (n) in the descriptions represents a decimal numeric option, 
and (x) represents an assigned value.  The parentheses should not be typed.
If a command is typed without a value when one is expected, the modem will 
assume a value of zero.

The option should immediately follow the command.  For example, to turn off
the result codes, type Q1 not Q=1.

You can repeat the last command line issued by entering A/  or a/.  Do not
begin the A/ with the AT prefix, and do not  follow the A/ with a return.

:::::::::::::::::::::::::
:::::COMMAND SUMMARY:::::
:::::::::::::::::::::::::

Command  Parameter       Description                                   Default

A                        Answer  

A/                       Repeat previous command

B(n)     0 or 1          Bell/CCITT Mode Select                             B1

D(n)     0,9,A-D,#       Dial Number                                     Pulse
         Modifiers       S= Reference # in ph # dir,
                         P= Pulse Dialing
                         T= Tone Dialing
                         W= Wait for Dialtone
                         ,= Timed wait set by S8
                         @= Wait for Quiet Answer
                         ;= Stay in command mode after dialing
                         |= On-hook flash
                         $= Calling and Billing Prompt
                         \= Reference a number in number directory
                         R= Switch to answer mode when
                            remote modem answers
B(n)     0 or 1          Bell/CCITT Mode Select                             B1

E(n)     0 or 1          Command Echo                                       E1

H(n)     0 or 1          Hook Control
                         0 Hang up (on hook)
                         1 Pick up phone line (off hook)

I(n)     0-3, 5          Information
                         0 Return product ID code
                         1 Return diagnostic status
                         2 Report CONNECT status
                         3 Return firmware version level
                         5 Last number dialed

L(n)     0-3             Speaker Volume                                     L2
                         0 No volume
                         1 Low volume
                         2 Medium volume
                         3 High volume

M(n)     0-3             Speaker Mode                                       M1
                         0 Speaker off
                         1 Speaker on during connect
                         2 Speaker always on
                         3 Speaker on after dialing
                           until carrier detected.

O(n)     0 or 1          Online
                         0 Modem in data mode
                         1 Retrain Equalizers

P                        Pulse Dialing

Q(n)     0-2             Quiet Enable                                       Q0
                         0 Return result code for both local
                           and remote modems
                         1 No result codes are reported
                         2 Origin modem reports results codes

T                        Tone Dialing

V(n)                     Verbose ON/OFF                                     V1
                         0 Return numeric response
                         1 Return English response

X(n)     0-2,4,          Result Code Format                                 X1
         11-12           0 0-4 result codes
                         1 Mod speed to 0-5,10-12,48
                         2 Same as X1 with 6-7,52-55
                         4 Same as X11 with 6-7
                         11 DTE speed, 0-5,10-16,48,49
                         12 Same as X4 with 52-53

Y(n)     0 or 1          Long Space Disconnect                              Y0
                         0 Modem ignores break
                         1 Modem disonnects on break

Z(n)     0 or 1          Reset
                         0 Reset specified by S255
                         1 Reset and recall profile B

&C(n)     0-3            DCD Control                                       &C0
                         0 DCD signal is on
                         1 DCD on after connect
                         2 DCD on/off specified by S47
                         3 DCD inverse of CTS

&D(n)     0-3            DTR Interpretation                                &D0
                         0 DTR signal is always true
                         1 DTR on/off to command mode
                         2 DTR on/off disconnects
                         3 DTR on/off resets modem

&F(n)     0-5,8-13,      Load Factor Defaults                              &F0
          32-24          0 TTY
                         1 Unattended answer mode
                         2 Intelligent answer mode
                         3 System V (HDB) (UUCP)
                         4 Ver 2 (BSD) (UUCP)
                         4.2-4.3 and SCO Xenix
                         5 Transparent Sync
                         8 MAC/IBM PC with SW
                           flow control (XON/XOFF)
                         9 MAC/IBM PC with HW
                           flow control (RTS/CTS)
                        10 Leased Line Async Originate
                        11 Leased Line Async Answer
                        12 Leased Line Sync Originate
                        13 Leased Line Sync Answer

&G(n)     0-2            Guard Tone Select                                 &G0
                         0 No guard tones
                         1 550 Hz gaurd tone
                         2 21800 Hz gaurd tone

&J(n)     0-2            Jack Type Select                                  &J0
                         0 &Joo Aux telco leads disabled
                         1 A/A1 control selected
                         2 MI/MIC control selected

&L(n)     0 or 1         Leased Line                                       &L0
                         0 Dial-up line
                         1 Leased line

&M(n)     0-1,3          Async/Sync Mode Select                            &M0
                         0 Equivalent to Q0
                         1 Equivalent to Q2
                         3 Equivalent to Q3

&Q(n)     0-3,6          Async/Sync Mode Select                            &Q0
                         0 Async mode
                         1 Sync mode 1
                         2 Sync mode 2
                         3 Sync mode 3
                         6 Transparent sync mode

&R(n)     0-4            CTS Control                                       &R3
                         0 CTS follows RTS per S26
                         1 CTS is on after CONNECT
                         2 CTS follows RTS, fixed delay
                         3 CTS is always on
                         4 Same as &R; CTS follows DTR when
                           modem is not connected.

&S(n)     0-4            DSR Control                                       &S0
                         0 DSR is always on
                         1 DSR on after answer tone
                         2 DSR on/off specified by S47
                         3 DSR on/off depends on DTR
                         4 DSR follows DCD

&T(n)     0,1,3-9        Test Mode                                         &T4

:::::::::::::::::::::::::
:::::::S REGISTERS:::::::
:::::::::::::::::::::::::

Register  Range   Description                                          Default

S0        0-255   Answer on Ring                                             0
S1        0-255   Ring Count
S2        0-255   Escape Character (ASCII)                                  43
S3        0-127   Command Line Terminator (ASCII)                           13
S4        0-127   Line Feed Character (ASCII)                               10
S5        0-127   Command Line Character (ASCII)                             8
S6        2-255   Pause Before Dialing (sec)                                 2
S7        1-255   Wait for Carrier Time (sec)                               40
S8        0-255   Pulse Time for Comma (sec)                                 2
S9        1-255   Carrier Detect Time (100 ms)                               6
S10       1-255   Carrier Loss Disconnect Time (100 ms)                     14
S11      50-255   Touchtone Dialing Timing (ms)                             70
S12       0-255   Escape Sequence Guard Time (1/50 sec)                     50
S18       0-255   Test Duration Timer                                        0
S25       5-255   DTR Delay Timing (10 ms)                                   5
S26       0-255   RTS to CTS Delay Interval (100 ms)                         1
S38       0-255   Delay Before Disconnecting                                 0
S41       0-255   Inactivity Timer (tenths of hours)                         0
S45       0-255   Remote Access(0=Disable, 255=Enable)                       0
S46       0-3     Call Security                                              0
          0=      Callback Security Disabled
          1=      Callback Security Enabled
          2=      Callback Security Enabled/Password Reverification
          3=      Passthroug Security Enabled/No Callback Required
S47       0 or 1  DSR/DCD Delay Time (50 ms)                                 4
S48       0 or 1  Control Character Mask                                     0
          0=      Most Significant Bit is Marked
          1=      Compare All Eight Bits
S50       0-254   Transmission Spee                                          0
          0=      Auto Speed Determination
          1=      300bps (Bell 103 or V.21)
          2=      1200bps (Bell 212A of V.22)
          3=      2400bps (V.22bis)
          6=      9600 bps (V.32)
          7=      14400 bps (V.32bis)
        254=      Use last AT command speed
S51       0-255   Interface Speed                                            4
          0=      300 bps
          1=      1200 bps
          2=      2400 bps
          3=      4800 bps
          4=      9600 bps
          5=      19200 bps
          6=      38400 bps
          7=      57600 bps
         35=      7200 bps
         43=      12200 bps
         46=      14400 bps
          5=      19200 bps
        251=      Reserved
        252=      AutoBaud (no type-ahead)
        253=      AutoBaud (38400 bps default)
        254=      AutoBaud (19200 bps default)
        255=      AutoBaud (9600 bps default)
S56       0-255   XON Character (ASCII)                                     17
S57       0-255   XOFF Character (ASCII)                                    19
S58       0-4     DTE Flow Control                                           3
          0=      No Flow Control
          1=      RTS/CTS in Half Duplex
          2=      RTS/CTS in Full Duplex
          3=      Use XON/XOFF
          4=      Use XON/XOFF and RTS/CTS
S59       0=255   CONNECT Suffixes (ASCII)                                   0
S61       0-1     Local Action of Break                                      1
          0=      Break processed as set in S63
          1=      Go into Command mode
S62       2-255   Default Break Length (10 ms)                              15
S63       0-3     Link Layer Action On Break                                 0
          0=      Break in sequence
          1=      Send break immediately
          2=      Discard data, break
          3=      Ignore break
S64       0 or1   Dial/Answer Sequence Abort                                 0
          0=      Abort dial/answer if character went by DTE before
                  connection is established
          1=      Ignore character sent by DTE while dialing or
                  answering a call.
S68       0-255   DCE Flow Control                                         255
          0=      No Flow Control
          2=      Full duplex HW flow control
          3=      XON/XOFF flow control
          4=      Both XON/XOFF and RTS/CTS HW flow control
        255=      Flow control specified by S58
S69       0-2     XON/XOFF Signal Handling                                   0
          0=      XON/XOFF character processed
          1=      Reserved
          2=      Processed if necessary
S70               Transmit Modulation Rate
S72               Receive Modulation Rate
S74               Packet Transmit Status
S78               Line Quality
S90       0 or1   DSRS Behavior                                              0
          0=      Disable DTE/DSRS input
          1=      Enable DTE/DSRS input
S93       3-255   V.32 AC Transmit Duration (100 ms)                         8
S94       0-3     Modulation Speed Negotiation                               1
          0=      Negotiation disabled; connect as S50
          1=      Allows a connection
          2=      Fallback within a modulation scheme
          3=      Use appropriate fallback
S100      0 or1   Reverse Answer/Originate Mode                              0
          0=      Normal mode
          1=      Reverse mode
S102      0 or 1   Pulse Dial Make/Break Ratio                               0
          0=      39% make/61% break ratio-US
          1=      33% make/67% break ratio-US
S104      0-4     Automatic Dialing                                          0
          0=      Disable automatic dialing
          1=      DTR automatic dialing
          3=      T/D switch automatic dialing
          4=      DTR starts connection attempt
S105      0-2     T/D Switch Enable                                          1
          0=      Disable T/D switch
          1=      Enable T/D switch
          2=      Enable T/D switch when on-hook
S111      0-255   File Transfer Protocol Support                           255
          0=      No Protocol supported
         10=      Kermit, no parity
         11=      Kermit, odd parity
         12=      Kermit, even parity
         13=      Kermit, mark parity
         14=      Kermit, space parity
         20=      Xmodem/Ymodem
         30=      UUCP-g protocol
         40=      ENQ/ACK host
         41=      ENQ/ACK terminal
         42=      ENQ/ACK host, not negotiated
         43=      ENQ/ACK terminal, not negotiated
        255=      Remote modem protocol
S112      0-127   Kermit Mark Character (ASCII)                              1
S180      0-3     Error Control Request                                      2
          0=      Error Control Disabled
          1=      v.42 without detection phase
          2=      v.42 with detection
          3=      MNP
S181      0-2     Originator Error Control Alternatives                      1
          0=      If no error control, direct
          1=      If no error control, buffer
          2=      Error Control Required
S183      8-255   Error Control Detection Timer (100 ms)                    28
S190      0-8     Data Compression Enable                                    1
          0=      Disable in both directions
          1=      Enable both but single or none
          2=      Enable both but receive only
          3=      Enable both but transmit only
          4=      Enable in both directions
          5=      Enable in transmit, accept none
          6=      Enable in transmit only
          7=      Enable in receive, accept none
          8=      Enable in receive only
S253      0-10    Command Set Selector                                      10
          0=      No command set
         10=      AT sync command set
S254      1-255   &F0 Profile Select                                       255
          0=      Load profile A
          1=      Load profile B
        255=      Load factory defaults
S255      0-255   Default Profile (A-B Switch/A/B); &F doesn't  change
          0=      Load profile A
          1=      Load profile B
        255=      Recall profile A/B switch

:::::::::::::::::::::::::
::::::RESULT CODES:::::::
:::::::::::::::::::::::::

Number  Message            Number  Message

 0      OK                 12      CONNECT 9600
 1      CONNECT            13      CONNECT 14400
 2      RING               14      CONNECT 19200
 3      NO CARRIER         15      CONNECT 38400
 4      ERROR              16      CONNECT 57600
 5      CONNECT 1200       46      CONNECT 7512
 6      NO DAILTONE        47      CONNECT 1275
 7      BUSY               48      CONNECT 7200
 8      NO ANSWER          49      CONNECT 12000
10      CONNECT 2400       52      RRING
11      CONNECT 4800       53      DIALING
                           54      NO PROMPTTONE

:::::::::::::::::::::::::
::Telebit T3000 Help DA::
::Steve Shannon ©050192::
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