
DATATRONICS TECHNOLOGY, INC.

DISCOVERY LCD

Card Type                    Modem(synchronous/asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     External
Fax Class                    Class II
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32,
                             V.32bis, V.34

                             Rockwell V.FC
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42bis

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  Line out                     CN1      Power switch                SW1

  Line in/leased line          CN2      LCD panel lock              SW2

  RS-232/422                   CN3      Voice/data                  SW3

  DC power                     CN4      LCD panel navigation        NAV

  Volume                        R1

                             DIAGNOSTIC LED(S)

   LED       Color      Status                   Condition

    MR      Yellow        On                    Power is on

    MR      Yellow        Off                   Power is off

    TR      Yellow        On                 DTR signal is high

    TR      Yellow        Off                DTR signal is low

   RTS      Yellow        On                 RTS signal is high

   RTS      Yellow        Off                RTS signal is low

   CTS      Yellow        On                 CTS signal is high

   CTS      Yellow        Off                CTS signal is low

    AA      Yellow        On                Auto-answer enabled

    AA      Yellow        Off               Auto-answer disabled

    AA      Yellow      Blinking              Phone is ringing

    RL      Yellow        On              Error correction enabled

    RL      Yellow        Off            Error correction disabled

    RL      Yellow      Blinking               Error detected

    RD      Yellow      Blinking          Modem is receiving data

    RD      Yellow        Off           Modem is not receiving data

    SD      Yellow      Blinking         Modem is transmitting data

    SD      Yellow        Off          Modem is not transmitting data

    CD      Yellow        On              Carrier signal detected

    CD      Yellow        Off           Carrier signal not detected

    OH      Yellow        On                 Modem is off-hook

    OH      Yellow        Off                 Modem is on-hook

                         Proprietary AT Command Set

                           ANSWER TONE DETECTION

  Type:          Configuration

  Format:        AT [cmds] %In [cmds]

  Description:   Controls answer tone detection

    Command                              Function

      %I0         Answer tone detection enabled

      %I1         Answer tone detection disabled

                       AUTO REDIAL INTERVAL TIMES

  Type          Register

  Format        AT [cmds] S19=n [cmds]

  Default       2

  Range         0-255

  Unit          Unidentified

  Description   Unidentified

                     AUTO-RELIABLE FALLBACK CHARACTER

  Type:                  Configuration

  Format:                AT [cmds] %An [cmds]

  Default:               0

  Range:                 0-127

  Unit:                  ASCII

  Description:           Sets the character used as the auto-reliable
                         fallback character. %A0 will disable this
                         function

                  AUTO-RELIABLE TIME BUFFER CONFIGURATION

  Type:               Configuration

  Format:             AT [cmds] \Cn [cmds]

  Description:        Controls the handling of incoming data during
                      auto-reliable time period

       Command                             Function

         \CO          Data is discarded

         \C1          Data is buffered

         \C2          Data is discarded, resets to \C1 on receipt of
                      autoreliable fallback character

                               AUTO-RETRAIN

  Type:              Configuration

  Format:            AT %En

  Description:       Selects auto-retrain mode

      Command                              Function

        %E0          Auto-retrain disabled

        %E1          Three auto-retrains attempted then hang up for
                     2400bps and above enabled

        %E2          Three auto-retrains attempted then hang up for
                     2400bps and above enabled

                          BIT-MAPPED REGISTER S14

  Format                AT [cmds] S14=n [cmds]

  Default:              136

  Range:                0-254

  Unit:                 Bit-mapped

  Description:          Controls echo, result codes, result code display,
                        dumb mode, dial mode, dumb modem and
                        answer/originate mode

   Bit        Value                         Function

    0               0   Not used

    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  Smart mode

                    1   Dumb mode

    5                0  Tone dial enabled

                    1   Pulse dial enabled

    6                0  Smart modem

                    1   Dumb modem

    7                0  Answer mode enabled

                    1   Originate mode enabled

                          BIT-MAPPED REGISTER S21

  Format:            AT [cmds] S20=n [cmds]

  Default:           176

  Range:             0-187

  Description:       Controls jack type, DSR, DTR, DCD and disconnect
                     options

     Bit      Value                         Function

      0             0  RJ-11/41S/45S

                   1   RJ12-12/13

      1             0   DSR forced high

                   1    DSR normal

      2            0    Not used

    4, 3           00   Ignore DTR

                   01   Go to command mode on low DTR

                   10   Hang up on low DTR

                  11    Initialize on low DTR

      5             0   DCD forced high

                   1    Normal operation

    7, 6           00   Special disconnect disabled

                   01   Long space disconnect enabled

                  10    Clear down disconnect enabled

                          BIT-MAPPED REGISTER S22

  Format               AT [cmds] S22=n [cmds]

  Default:             118

  Range:               0 - 255

  Unit:                Bit-mapped.

  Description:         Controls volume and speaker settings, result
                       codes, and make/break pulse ratio

    Bit      Value                          Function

   1, 0           00   Lowest volume setting

                  01   Low volume setting

                  10   Medium volume setting

                 11    Highest volume setting

   3, 2           00   Speaker disabled

                  01   Speaker enabled until carrier signal detected

                  10   Speaker enabled

                 11    Speaker enabled until carrier signal detected, but
                       disable during dialing

  6, 5 ,4        000   Numeric result codes enabled

                 001   Verbose result codes enabled

                 010   Dialtone detection enabled

                 011   Busy tone detection enabled

                100    Busy and dialtone detection enabled

     7             0   39/61ms at 10pps (North America)

                  1    33/67ms at 10pps (Europe)

                          BIT-MAPPED REGISTER S24

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

  Default:           0

  Range:             0-7

  Description:       Controls V.25bis options

     Bit      Value                         Function

      0             0  V.25bis disabled

                   1   V.25bis enabled

      1             0   V.25bis asynchronous enabled

                   1    V.25bis synchronous enabled

      2             0   V.25bis HDLC enabled

                   1    V.25bis bisynchronous enabled

                          BIT-MAPPED REGISTER S27

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

  Default:              0

  Range:                0-236

  Description:          Controls synchronous mode, pulse dial speed,
                        clock source, and data protocol

      Bit         Value                       Function

    2, 1, 0           000   Asynchronous operation

                      001   Synchronous mode 1 operation

                      010   Synchronous mode 2 operation

                      011   Synchronous mode 3 operation

                     100    Asynchronous dial

       3                 0   Standard pulse dial enabled

                        1    Fast pulse dial enabled

      5, 4              00   Local DCE transmit clock enabled

                        01   Local DTE transmit clock enabled

                       10    Remote DCE transmit enabled

      7, 6              00   V.21, V.22, V.32 enabled

                        01   Bell 103A/212A

                        10   V.23 back channel

                       11    V.23 main channel

                          BIT-MAPPED REGISTER S29

  Format:           AT [cmds] S29=n [cmds]

  Default:          3

  Range:            31

  Description:      Controls data bits, parity and stop bits

     Bit      Value                         Function

    1, 0           00  5 data bits

                   01  6 data bits

                   10  7 data bits

                  11   8 data bits

    3, 2           00   No parity

                   01   Space parity

                   10   Even parity

                  11    Odd parity

      4             0   1 stop bit

                   1    2 stop bits

                          BIT-MAPPED REGISTER S32

  Format:                  AT [cmds] S32=n [cmds]

  Default:                 17

  Range:                   0-191

  Description:             Controls ring, call back security, hardware
                           data security, message working bit, V.32
                           forward/backward link, &Z/@Z working bit and
                           line used

       Bit          Value                      Function

        0                 0   Ring disabled

                         1    Ring enabled

        1                  0  Call back security disabled

                          1   Call back security enabled

        2                  0  Hardware data security disabled

                          1   Hardware data security enabled

        3                  0  Open message working bit

                          1   Close message working bit

        4                  0  V.32 forward/backward link disabled

                          1   V.32 forward/backward link enabled

        5                  0  &Z working bit enabled

                          1   @Z working bit enabled

       7, 6               00  Switched line enabled

                          01  2 wire leased line enabled

                         10   4 wire leased line enabled

                          BIT-MAPPED REGISTER S34

  Format:                AT [cmds] S34=n [cmds]

  Default:               0

  Range:                 0-63

  Description:           Controls V.32 TCM/QAM, DTR dump recognition,
                         RLSD level, asynchronous and soft reset

      Bit         Value                       Function

       0                 0  Enable trellis code modulation

                        1   Enable quadratic amplitude modulation

       1                 0   Recognize DTR dump in handshaking

                        1    Ignore DTR dump in handshaking

      3, 2              00   RLSD on at, -43dbm off at -48dbm

                        01   RLSD on at, -33dbm off at -38dbm

                        10   RLSD on at, -26dbm off at -31dbm

                       11    RLSD on at, -16dbm off at -21dbm

      5, 4              00   Normal AT&F ATZ

                        01   Quick ATZ.2

                       10    Quick AT&F ATZ

                          BIT-MAPPED REGISTER S35

  Format:                AT [cmds] S35=n [cmds]

  Default:               15

  Range:                 0-232

  Description:           Controls Power on auto dial

        Bit           Value                     Function

    3, 2, 1, 0           0000   STN for power on auto dial

                        1000    Power on auto dial disabled

        5, 4                00  Restore all disabled

                            01  Switched line simulates leased line
                                enabled
                           10
                                Switched line back up enabled

         6                   0  Single phone system enabled

                            1   Multiple phone systems enabled

         7                   0  Disconnect reset disabled

                            1   Disconnect reset enabled

                          BIT-MAPPED REGISTER S39

  Format:                 AT [cmds] S39=n [cmds]

  Default:                153

  Range:                  0-253

  Description:            Controls compression, auto retrain answer tone
                          check, compromise equalizer and detect phase

       Bit         Value                       Function

        0                 0  Data compression disabled

                         1   Data compression enabled

      2, 1               00   Auto retrain disabled

                         01   Auto retrain on same speed

                        10    Auto retrain with speed change

      4, 3               00   Disabled

                         01   Transmit only

                         10   Receive only

                        11    Transmit and receive

        5                 0   Answer tone check enabled

                         1    Answer tone check disabled

        6                 0   Compromise equalizer enabled

                         1    Compromise equalizer disabled

        7                 0   Detect phase disabled

                         1    Detect phase enabled

                          BIT-MAPPED REGISTER S40

  Format:                    AT [cmds] S40=n [cmds]

  Default:                   0

  Range:                     0-33

  Description:               Controls remote access and remote access
                             security

       Bit           Value                      Function

        0                   0  Remote access disabled

                           1   Remote access enabled

    4, 3, 2, 1          0000    Not used

         5                  0   Remote access security disabled

                           1    Remote access security enabled

                          BIT-MAPPED REGISTER S43

  Format:                   AT [cmds] S43=n [cmds]

  Default:                  19

  Range:                    0-155

  Description:              Controls MNP block size, dictionary size and
                            data buffer

       Bit          Value                      Function

       1, 0               00   Maximum MNP block size 64 characters

                          01   Maximum MNP block size 128 characters

                          10   Maximum MNP block size 192 characters

                         11    Maximum MNP block size 256 characters

        2                 0    Not used

       4, 3               00   Maximum dictionary size 512 entries

                          01   Maximum dictionary size 1024 entries

                          10   Maximum dictionary size 2048 entries

                         11    Maximum dictionary size 4048 entries

        5                 0    Not used

       7, 6               00   Disable data buffer

                          01   Set buffer to 4 seconds, 200 characters or
                               SYN character detected then switch to
                         10    normal connection

                               Data buffer disabled, switch to normal
                               connection

                          BIT-MAPPED REGISTER S44

  Format:               AT [cmds] S44=n [cmds]

  Default:              0

  Range:                140

  Description:          Controls echo, flow control and serial port
                        speed.

      Bit        Value                        Function

       2               0   On line data echo disabled

                      1    On line data echo enabled

       3                0  Modem port flow control disabled

                       1   Modem port flow control enabled

    6, 5, 4          000   Not used

       7                0  Serial port speed locked

                       1   Serial port speed follows connection speed

                          BIT-MAPPED REGISTER S45

  Format:               AT [cmds] S45=n [cmds]

  Default:              101

  Range:                253

  Description:          Controls break control, link type, DTE speed and
                        mode

      Bit         Value                       Function

    2, 1, 0           000   Enter command mode, do not send break

                      001   Clear buffer, send break immediately

                      010   Enter command mode, do not send break

                      011   Do not clear buffer, send break immediately

                      100   Enter command mode, do not send break

                     101    Send break with transmitted data

       3                 0  Stream link enabled

                        1   Block link enabled

       4                 0  DTE speed follows connect speed

                        1   DTE speed locked

    7, 6, 5            000  Normal mode

                       001  Direct mode

                       010  MNP mode

                       011  Auto reliable mode

                       100  LAPM mode

                       101  LAPM with fallback to normal mode

                       110  LAPM with fallback to MNP mode

                      111   MNP with fallback to normal mode

                          BIT-MAPPED REGISTER S46

  Format:               AT [cmds] S46=n [cmds]

  Default:              75

  Range:                0-238

  Description:          Controls flow control, ring indicate and result
                        codes

      Bit         Value                       Function

    2, 1, 0           000   Flow control disabled

                      001   XON/XOFF flow control enabled

                      010   Unidirectional hardware flow control enabled

                      011   Bidirectional hardware flow control enabled

                      100   Unidirectional XON/XOFF flow control enabled

                      101   CTS low until connect, then CTS
                            unidirectional flow control enabled
                     110
                            CTS low until connect, then RTS/CTS flow
                            control enabled

       3                 0  Ring indicate after handshaking enabled

                        1   Ring indicate after handshaking disabled

    6, 5, 4            000  V.42/MNP result code disabled

                       001  V.42/MNP4 and DTE speed result codes enabled

                       010  V.42/MNP4 and DCE speed result codes enabled

                       011  V.42bis/MNP5 and DTE speed result codes
                            enabled
                       100
                            V.42bis/MNP5 and DCE speed result codes
                       101  enabled

                      110   V.42bis/MNP5 and DTE debug codes enabled

                            V.42bis/MNP5 and DCE debug codes enabled

       7                 0  Flow control character trapped

                        1   Flow control character passed through

                          BIT-MAPPED REGISTER S53

  Format:                AT [cmds] S53=n [cmds]

  Default:               56

  Range:                 0-56

  Description:           Controls ring indicate reset timer, V.25 calling
                         tone and T30 calling tone

        Bit           Value                     Function

    3, 2, 1, 0           1000   Ring indicate reset timer

         4                   0   V.25 calling tone disabled

                            1    V.25 calling tone enabled

         5                   0   T30 calling tone disabled

                            1    T30 calling tone enabled

                                BREAK SEND

  Type:          Configuration

  Format:        AT [cmds] \Bn [cmds]

  Default:       3

  Range:         0-9

  Unit:          .1 second

  Description:   Sends break to modem

                                BREAK TYPE

  Type:            Configuration

  Format:          AT [cmds] \Kn [cmds]

  Description:     Configures action of break signal

    Command                           Break from DTE

      \K0         Online command mode enabled, send no break to remote
                  modem

      \K1         Break sent to remote modem and buffers cleared

      \K2         Online command mode enabled, send no break to remote
                  modem

      \K3         Send break to remote modem immediately

      \K4         Online command mode enabled, send no break to remote
                  modem

      \K5         Send break with transmitted data

                          CALL BACK DELAY TIMER

  Type          Register

  Format        AT [cmds] S31=n [cmds]

  Default       10

  Range         0-255

  Unit          1 second

  Description   Controls call back delay

                              CALLBACK NUMBER

  Type                  Configuration

  Format                AT [cmds] @Zn=xxx [cmds]

  Default               None

  Description           Stores numbers to be called back during callback
                        operation. N is a memory location from 0-9 and
                        xxx is a combination of the number and up to 49
                        dial modifiers.

                             CALLBACK PASSWORD

  Type                 Configuration

  Format               AT [cmds] @Wn=xxxxxxxxxx [cmds]

  Default              None

  Range                A-Z, a-z,0-9

  Unit                 ASCII string

  Description          Stores callback password (n is password and
                       xxxxxxxxxx is up to ten characters)

                             CALLBACK SECURITY

  Type:          Configuration

  Format:        AT [cmds] @An [cmds]

  Description:   Modem returns call to previously stored number

    Command                              Function

      @A0         Callback security disabled

      @A1         Callback security enabled

                         CALL BACK SECURITY DELAY

  Type               Configuration

  Format             AT [cmds] @Dn [cmds]

  Default            30

  Range              1-255

  Unit               1 second

  Description        Sets length of wait before dialing stored callback
                     security phone number

                          CARRIER DETECT TIMER

  Type          Register

  Format        AT [cmds] S17=n [cmds]

  Default       10

  Range         0-255

  Unit          Unidentified

  Description   Unidentified

                             CLOSING MESSAGE

  Type          Configuration

  Format        AT [cmds] @Gxxx [cmds]

  Default       THANK YOU! YOU WILL BE CALLED BACK!

  Range         Up to 60 characters

  Unit          ASCII

  Description   Stores a closing message

                       CONNECTION PASSWORD SECURITY

  Type:            Configuration

  Format:          AT [cmds] @En [cmds]

  Description:     Requires correct password to be included in dial
                   command string

     Command                              Function

       @E0         Password security disabled

       @E1         Password security enabled

                                COMPRESSION

  Type:          Configuration

  Format:        AT %Cn

  Description:   Selects data compression

    Command                              Function

      %C0        Data compression disabled

      %C1        MNP5 and V.42bis enabled

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Description:   Sets connect mode

    Command                              Function

      \N0        Normal mode enabled

      \N1        Direct mode enabled

      \N2        MNP reliable mode only enabled

      \N3        V.42 and MNP modes enabled

      \N4        V.42bis and V.42 modes enabled

                            CONNECTION PASSWORD

  Type                  Configuration

  Format                AT [cmds] @Pxxxxxxxxx [cmds]

  Default               None

  Range                 A-Z,a-z,0-9,*,#

  Unit                  ASCII string

  Description           Stores password required by command string
                        password security option of up to nine characters

                       CONNECTION SPEED UPPER LIMIT

  Type:          Immediate

  Format:        AT [cmds] %Bn [cmds]

  Description:   Selects the current DCE speed.

    Command                              Function

      %B0        Line speed sets maximum serial port speed

     %B300       300bps

     %B600       600bps

     %B1200      1200bps

     %B2400      2400bps

     %B4800      4800bps

     %B7200      7200bps

     %B9600      9600bps

    %B12000      12.0Kbps

    %B16800      16.8Kbps

    %B14400      14.4Kbps

    %B19200      19.2Kbps

    %B21600      21.6Kbps

    %B24000      24.0Kbps

    %B26400      26.4Kbps

    %B28800      28.8Kbps

                             DIAL TONE DETECT

  Type:           Configuration

  Format:         AT [cmds] W [cmds]

  Description:    Requires a continuous three second dial tone before
                  dialing

                         DISPLAY CALLBACK SETTINGS

  Type:            Immediate

  Format:          AT [cmds] @Vn [cmds]

  Description:     Displays passwords, messages and phone numbers stored
                   in memory

     Command                              Function

       @V0         Display stored callback security passwords

       @V1         Display stored callback security phone numbers

       @V2         Display opening and closing messages

                             DISPLAY PASSWORDS

  Type:          Immediate

  Format:        AT [cmds] @Fn [cmds]

  Description:   Displays callback security and remote access passwords

                                DTR DELAY

  Type          Register

  Format        AT [cmds] S25=n [cmds]

  Default       5

  Range         0-255

  Unit          1 second

  Description   Sets length of time modem ignores DTR change

                                 DUMB MODE

  Type:          Configuration

  Format:        AT [cmds] @In [cmds]

  Description:   Controls smart and dumb modes

    Command                              Function

      @I0         Smart mode

      @I1         Dumb mode

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] \Qn [cmds]

  Description:   Sets type of flow control used by modem

    Command                              Function

      \Q0        Flow control disabled

      \Q1        XON/XOFF flow control enabled

      \Q2        CTS flow control to DTE enabled

      \Q3        RTS/CTS flow control enabled

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] \Gn [cmds]

  Description:   Selects modem port flow control

    Command                              Function

      \G0        Flow control disabled

      \G1        Flow control enabled

                              HANG UP DELAY

  Type          Register

  Format        AT [cmds] S38=n [cmds]

  Default       0

  Range         0-255

  Unit          Unidentified

  Description   Sets time before forced hang up, n=255 disables

                             INACTIVITY TIMER

  Type:                  Configuration

  Format:                AT [cmds] \Tn [cmds]

  Default:               0

  Range:                 0-255

  Unit:                  1 minute

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

                            INACTIVITY TIMER

  Type          Register

  Format        AT [cmds] S47=n [cmds]

  Default       0

  Range         0-255

  Unit          Unidentified

  Description   Sets time modem waits before disconnecting

                      LEASED LINE DIALUP BACKUP TIMES

  Type:               Register

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

  Default:            0

  Range:              0-255

  Unit:               Unidentified

  Description:        After leased line failure, modem attempts to
                      reconnect after specified delay

                     LEASED LINE DIALUP BACKUP TIMER

  Type          Register

  Format        AT [cmds] S15=n [cmds]

  Default       5

  Range         0-255

  Unit          Unidentified

  Description   Unidentified

                             LEASED LINE RETRY

  Type             Configuration

  Format           AT [cmds] -Bn [cmds]

  Range            Unidentified

  Unit             Retries

  Description      Controls the number of times a leased line connection
                   is attempted

                             LINE SIGNAL LEVEL

  Type:          Immediate

  Format:        AT [cmds] %L [cmds]

  Description:   Returns received line signal level

                       LEASED LINE TRANSMIT LEVEL

  Type          Register

  Format        AT [cmds] S51=n [cmds]

  Default       10

  Range         0-31

  Unit          Unidentified

  Description   Sets leased line transmit level

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] @Yn [cmds]

  Description:   Selects line type

    Command                              Function

      @Y0         Switched line operation

      @Y1         Switched line operation emulates leased line operation

      @Y2         Leased line with switched line backup

                                 LOCK DCE

  Type:          Configuration

  Format:        AT [cmds] %Hn [cmds]

  Description:   Controls DCE speed

    Command                              Function

      %H0         DCE speed not locked

      %H1         DCE speed locked

                             LOCK SERIAL PORT

  Type:          Configuration

  Format:        AT [cmds] \Jn [cmds]

  Description:   Sets operation of serial port speed

    Command                              Function

      \J0        Serial speed locked

      \J1        Serial speed follows connect speed

                    MAXIMUM BLOCK SIZE FOR TRANSMISSION

  Type:          Configuration

  Format:        AT [cmds] \An [cmds]

  Description:   Sets the maximum transmittable block size

    Command                              Function

      \A0        MNP block size is 64 characters

      \A1        MNP block size is 128 characters

      \A2        MNP block size is 192 characters

      \A3        MNP block size is 256 characters

                             OPENING MESSAGE

  Type          Configuration

  Format        AT [cmds] @Oxxx [cmds]

  Default       PLEASE ENTER CALL BACK PASSWORD

  Range         Up to 60 characters

  Unit          ASCII string

  Description   Stores an opening message

                                 PROTOCOL

  Type:          Configuration

  Format:        AT [cmds] -Vn [cmds]

  Description:   Controls protocol used

    Command                              Function

      -V0         V.34 auto

      -V1         V.FC auto

      -V3         V.32bis auto

      -V4         V.34/V.FC/V.32bis

      -V5         V.34 only

      -V6         V.FC only

      -V7         V.32bis only

                                 PROTOCOL

  Type:          Register

  Format:        AT [cmds] S54=n [cmds]

  Description:   Controls protocol used

    Command                              Function

     S54=0        V.34 auto mode

     S54=1        V.FC auto mode

     S54=3        V.32bis auto mode

     S54=4        V.34, V.FC and V.32bis

     S54=5        V.FC and V.32bis

     S54=6        V.34 only

     S54=7        V.FC only

     S54=8        V.32bis only

                                  REDIAL

  Type           Configuration

  Format         AT [cmds] N=n [cmds]

  Default        0

  Range          0-15

  Unit           Redials

  Description    Sets number of redials attempted if busy signal received

                             REDIAL INTERVAL

  Type          Configuration

  Format        AT [cmds] N5=n [cmds]

  Default       1

  Range         0-255

  Unit          2 seconds

  Description   Controls time between redials

                              REDIAL LIMIT

  Type          Register

  Format        AT [cmds] S49=n [cmds]

  Default       15

  Range         Unidentified

  Unit          Unidentified

  Description   Sets maximum number of redials

                               REDIAL ORDER

  Type              Configuration

  Format            AT [cmds] -Z=nnn [cmds]

  Unit              Phone number memory location

  Description       Controls order in which stored numbers are dialed -Z?
                    displays order

                               REMOTE ACCESS

  Type:          Configuration

  Format:        AT [cmds] *En [cmds]

  Description:   Controls remote access operation

    Command                              Function

      *E0         Remote access disabled

      *E1         Remote access enabled

                    REMOTE ACCESS ATTENTION CHARACTER

  Type          Register

  Format        AT [cmds] S41=n [cmds]

  Default       42

  Range         0-255

  Unit          ASCII

  Description   Selects the remote access attention character

                         REMOTE ACCESS PASSWORD

  Type          Configuration

  Format        AT [cmds] *Pxxxxxxxxx

  Default       None

  Range         Up to nine characters

  Unit          ASCII printable characters

  Description   Stores remote access password

                           REPORT SIGNAL QUALITY

  Type:          Immediate

  Format:        AT [cmds] %Q [cmds]

  Description:   Reports signal quality

                            RESULT CODE FORMAT

  Type:            Configuration

  Format:          AT [cmds] \Vn [cmds]

  Description:     Selects which result codes are displayed

     Command                              Function

       \V0         Connect speed result codes enabled

       \V1         Connect speed and V.42/MNP result codes enabled

       \V2         Connect speed, V.42/MNP and data compression result
                   codes enabled

       \V3         Connect speed, V.42/MNP and data compression result
                   codes enabled

       \V4         Connect speed, V.42/MNP and data compression result
                   codes enabled

                                  RINGER

  Type:          Configuration

  Format:        AT [cmds] @Bn [cmds]

  Description:   Controls ring signal passthrough to modem speaker

    Command                              Function

      @B0         Ringer disabled

      @B1         Ringer enabled

                             RTS TO CTS DELAY

  Type            Register

  Format          AT [cmds] S26=n [cmds]

  Default         0

  Range           0-255

  Unit            .1 second

  Description     Sets delay after receipt of RTS signal until CTS forced
                  high

                      SWITCHED LINE TRANSMIT LEVEL

  Type          Register

  Format        AT [cmds] S50=n [cmds]

  Default       10

  Range         0-15

  Unit          Unidentified

  Description   Sets switched line transmit level

                                SERIAL PORT

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

  Default:               113

  Range:                 0-243

  Description:           Controls serial port options, parity and data
                         bits

        Bit           Value                     Function

   4, 3, 2, 1, 0         00000  Lock serial port at 75bps

                         00001  Lock serial port at 110bps

                         00010  Lock serial port at 300bps

                         00011  Lock serial port at 600bps

                         00100  Lock serial port at 1200bps

                         00101  Lock serial port at 2400bps

                         00110  Lock serial port at 4800bps

                         00111  Lock serial port at 7200bps

                         01000  Lock serial port at 9600bps

                         01001  Lock serial port at 12.0Kbps

                         01010  Lock serial port at 14.4Kbps

                         01011  Lock serial port at 16.8Kbps

                         01100  Lock serial port at 19.2Kbps

                         01101  Lock serial port at 21.6Kbps

                         01110  Lock serial port at 24.0Kbps

                         01111  Lock serial port at 26.4Kbps

                         10000  Lock serial port at 28.8Kbps

                         10001  Lock serial port at 38.4Kbps

                         10010  Lock serial port at 57.6Kbps

                        10011   Lock serial port at 11.52Kbps

        6, 5                00   Even parity

                            01   Space parity

                            10   Odd parity

                           11    No parity

         7                   0   8 data bits

                            1    7 data bits

                             SERIAL PORT SPEED

  Type:          Register

  Format:        AT [cmds] S52n [cmds]

  Description:   Controls serial port speed

    Command                              Function

     S52=0        Serial port speed follows connect speed

     S52=1        Lock serial port at 110bps

     S52=2        Lock serial port at 300bps

     S52=3        Lock serial port at 600bps

     S52=4        Lock serial port at 1200bps

     S52=5        Lock serial port at 2400bps

     S52=6        Lock serial port at 4800bps

     S52=7        Lock serial port at 7200bps

     S52=8        Lock serial port at 9600bps

     S52=9        Lock serial port at 12.0Kbps

     S52=10       Lock serial port at 14.4Kbps

     S52=11       Lock serial port at 16.8Kbps

     S52=12       Lock serial port at 19.2Kbps

     S52=13       Lock serial port at 21.6Kbps

     S52=14       Lock serial port at 24.0Kbps

     S52=15       Lock serial port at 26.4Kbps

     S52=16       Lock serial port at 28.8Kbps

     S52=17       Lock serial port at 38.4Kbps

     S52=18       Lock serial port at 57.6Kbps

     S52=19       Lock serial port at 11.52Kbps

                               SERVICE CLASS

  Format:            AT [cmds] S33=n [cmds]

  Default:           0

  Range:             192

  Description:       Controls MNP link and second channel

     Bit      Value                         Function

      6             0   MNP synchronous link enabled

                   1    MNP asynchronous link enabled

      7             0   Second channel disabled

                   1    Second channel enabled

                                TEST MODES

  Format             AT [cmds] S16=n [cmds]

  Default:           0

  Range:             0-255

  Unit:              Bit-mapped

  Description:       Controls loopback tests, analog, digital, remote
                     digital, and self tests

            Note: Bit 3 is read only

   Bit      Value                          Function

    0            0   Local analog loopback disabled

                1    Local analog loopback in enabled

    1            0   Local digital loopback disabled

                1    Local digital loopback in enabled

    2            0   Local digital loopback disabled

                1    Local digital loopback in enabled

    3            0   Modem not in remote digital loopback

                1    Remote digital loopback in progress

    4            0   Remote digital loopback disabled

                1    Remote digital loopback enabled

    5            0   Remote digital loopback w/ self-test disabled

                1    Remote digital loopback w/ self-test enabled

    6            0   Local analog loopback enabled

                1    Local analog loopback disabled

    7            0   Remote digital loopback enabled

                1    Remote digital loopback disabled

                               V.25bis MODES

  Type:          Configuration

  Format:        AT [cmds] *Cn [cmds]

  Description:   Selects type of V.25bis operation

    Command                              Function

      *C0         V.25bis disabled

      *C1         V.25bis asynchronous enabled

      *C2         V.25bis bi-synchronous enabled

      *C3         V.25bis HDLC enabled

                       V.42bis MAXIMUM STRING LENGTH

  Type:          Register

  Format:        AT [cmds] S42=n [cmds]

  Default:       16

  Range:         0-255

  Unit:          Unidentified

  Description:   Selects string size for V.42bis compression

                       WAIT FOR CONNECTION PASSWORD

  Type            Register

  Format          AT [cmds] S48=n [cmds]

  Default         15

  Range           0-255

  Unit            1 second

  Description     Sets length of wait for connection password after
                  connection

                           XON/XOFF PASS-THROUGH

  Type:          Configuration

  Format:        AT [cmds] \Xn [cmds]

  Description:   Selects whether XON/XOFF signals are sent to remote
                 modem

    Command                              Function

      \X0        XON/XOFF signals trapped by local modem

      \X1        XON/XOFF passed through local modem

                                S REGISTERS

        Register                 Default                 Function

           S49                     15                  Redial limit

           S50                     10              Switched line transmit
                                                           level

           S51                     10               Leased line transmit
                                                           level

