
3COM CORPORATION

US ROBOTICS MP/8

Card Type                          Modem (asynchronous)
Chip Set                           Unidentified
Maximum Modem Rate                 33.6Kbps
Maximum Fax Rate                   14.4Kbps
Data Modulation Protocol           Bell 103/212A, ITU-T V.34, V.FC,
                                   V.32terbo, V.32bis, V.32, V.25, V.23,
                                   V.22bis, V.22, V.21
Fax Modulation Protocol            V.17, V.29, V.27ter, V.21
Error Correction/Compression       V.42, V.42bis, MNP5
Fax Class                          Class I & II
Data Bus                           External

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  DC power                      CN1     RJ-45 jack channel 2        CN12

  RJ-11 jack channel 1          CN2     RJ-45 jack channel 3        CN13

  RJ-11 jack channel 2          CN3     RJ-45 jack channel 4        CN14

  RJ-11 jack channel 3          CN4     RJ-45 jack channel 5        CN15

  RJ-11 jack channel 4          CN5     RJ-45 jack channel 6        CN16

  RJ-11 jack channel 5          CN6     RJ-45 jack channel 7        CN17

  RJ-11 jack channel 6          CN7     RJ-45 jack channel 8        CN18

  RJ-11 jack channel 7          CN8     Unidentified                CN19

  RJ-11 jack channel 8          CN9     Unidentified                CN20

  Unidentified                 CN10     Power switch                SW1

  RJ-45 jack channel 1         CN11

















                        USER CONFIGURABLE SETTINGS

                  Setting                       Label         Position

  DTR normal operation                          SW2/1            Off

  DTR always on                                 SW2/1            On

  Verbal result codes                           SW2/2            Off

  Numeric result codes                          SW2/2            On

  Result codes disabled                         SW2/3            Off

  Result codes enabled                          SW2/3            On

  Command mode local echo enabled               SW2/4            Off

  Command mode local echo disabled              SW2/4            On

  Auto-answer enabled                           SW2/5            Off

  Auto-answer disabled                          SW2/5            On

  Carrier detect normal operation               SW2/6            Off

  Carrier detect always on                      SW2/6            On

  Result codes in Originate and Answer          SW2/7            Off
  mode

  Result codes in Originate mode only           SW2/7            On

  Command recognition disabled                  SW2/8            Off

  Command recognition enabled                   SW2/8            On

  Modem hangs up and returns to command         SW2/9            Off
  mode

  Modem maintains connection, returns to        SW2/9            On
  command mode

  Load settings from NVRAM                      SW2/10           Off

  Load fail-safe settings from ROM              SW2/10           On

  Factory configured - do not alter            SW3/3-10      Unidentified

      CONSOLE PORT BAUD RATE

    Rate       SW3/1      SW3/2

  9600bps       Off        Off

  19.2Kbps      Off         On

  38.4Kbps      On         Off

  57.6Kbps      On          On

                             DIAGNOSTIC LED(S)

   LED        Color       Status                  Condition

   LED1        Off          Off                   Power off

   LED1       Green         On                     Power on

   LED1        Red          On                 Critical failure

   LED2        Off          Off               Channel 1 is idle

   LED2       Green         On               Channel 1 is online

   LED2      Orange         On               Channel 1 is dialing

   LED2       Green      Flashing          Channel 1 is testing/SDL

   LED2        Red          On            Channel 1 critical failure

   LED3        Off          Off               Channel 2 is idle

   LED3       Green         On               Channel 2 is online

   LED3      Orange         On               Channel 2 is dialing

   LED3       Green      Flashing          Channel 2 is testing/SDL

   LED3        Red          On            Channel 2 critical failure



                         DIAGNOSTIC LED(S) (CONT.)

   LED         Color        Status                 Condition

   LED4         Off          Off               Channel 3 is idle

   LED4        Green          On              Channel 3 is online

   LED4       Orange          On             Channel 3 is dialing

   LED4        Green       Flashing        Channel 3 is testing/SDL

   LED4         Red           On          Channel 3 critical failure

   LED5         Off          Off               Channel 4 is idle

   LED5        Green          On              Channel 4 is online

   LED5       Orange          On             Channel 4 is dialing

   LED5        Green       Flashing        Channel 4 is testing/SDL

   LED5         Red           On          Channel 4 critical failure

   LED6         Off          Off               Channel 5 is idle

   LED6        Green          On              Channel 5 is online

   LED6       Orange          On             Channel 5 is dialing

   LED6        Green       Flashing        Channel 5 is testing/SDL

   LED6         Red           On          Channel 5 critical failure

   LED7         Off          Off               Channel 6 is idle

   LED7        Green          On              Channel 6 is online

   LED7       Orange          On             Channel 6 is dialing

   LED7        Green       Flashing        Channel 6 is testing/SDL

   LED7         Red           On          Channel 6 critical failure

   LED8         Off          Off               Channel 7 is idle

   LED8        Green          On              Channel 7 is online

   LED8       Orange          On             Channel 7 is dialing

   LED8        Green       Flashing        Channel 7 is testing/SDL

   LED8         Red           On          Channel 7 critical failure

   LED9         Off          Off               Channel 8 is idle

   LED9        Green          On              Channel 8 is online

   LED9       Orange          On             Channel 8 is dialing

   LED9        Green       Flashing        Channel 8 is testing/SDL

   LED9         Red           On          Channel 8 critical failure

  LED10        Green          On       Management station status normal

  LED10         Red           On       Management station has suffered a
                                          critical SNMP agent failure

  LED10        Green       Flashing    Management station is testing/SDL

  LED10      Green/Red     Flashing    Management station has suffered a
                                             non-critical failure

  LED10         Off          Off        Management station power is off

  LED11        Green          On       Management station status normal

  LED11         Red           On       Management station has suffered a
                                             critical MP/8 failure

  LED11         Off          Off        Management station power is off

  LED12        Green          On       Management station is transmitting
                                                  on LAN port

  LED12         Off          Off           Management station is not
                                           transmitting on LAN port

  LED13        Green          On       Management station is receiving on
                                                   LAN port

  LED13       Orange          On         Rate of incoming Ethernet data
                                        exceeds processing capability of
                                                    system

  LED13         Red           On         Rate of incoming Ethernet data
                                      exceeds memory resources of system

  LED13         Off          Off          Rate of incoming data within
                                         processing/memory resources of
                                                    system

                         DIAGNOSTIC LED(S) (CONT.)

   LED      Color      Status                   Condition

  LED14     Green        On        Management station is transmitting on
                                                 WAN port

  LED14      Off        Off       Management station is not transmitting
                                               on WAN port

  LED15     Green        On       Management station is receiving on WAN
                                                   port

  LED15      Off        Off       Management station is not receiving on
                                                 WAN port

                       SUPPORTED COMMAND SET

                         Basic AT Commands

  AT, +++, A/

  A, B, C, E, F, H, M, O, V

  &C, &G, &L, &X, &Z

                            S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S26

  Note: See MHI Help File for full command documentation.

                         Proprietary AT Command Set

                                   HELP

  Type:          Immediate

  Format:        AT [cmds] $ [cmds]

  Description:   Displays the help screen

                            REPEAT LAST COMMAND

  Type:          Immediate

  Format:        AT [cmds] A> [cmds]

  Description:   Repeat last command until canceled by pressing any key.









































                                   DIAL

  Type:                  Immediate

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

  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

          DL             Re-dial last number

          DP             Pulse dialing enabled

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

         DS=n            Dial stored telephone number n

          DT             Tone dialing enabled/Pulse dialing disabled

          DW             Dialing resumed following dial tone detection

          D,             Dialing paused for amount of time specified in
                         S8 register

        D"WXY"           Optional method of denoting telephone numbers.
                         Letters enclosed in quotes are interpreted as
                         numbers according to the system found on a
                         telephone keypad.

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

          D@             Wait for Quite Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by silence up to the time specified in
                         S7, is received prior to executing the rest of
                         the dial string.

          D$             Wait for prompt tone detection function enabled.
                         Waits for prompt tone for amount of time
                         specified by the S7 command.

          D;             Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.

          D"             Dial the letters that follow

          D/             Pause for 125 milliseconds

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports 4 digit product code

       I1        Reports results of ROM checksum

       I2        Reports results of RAM test

       I3        Reports the product name

       I4        Reports the current modem settings

       I5        Reports the settings stored in NVRAM

       I6        Reports statistics for the last call

       I7        Reports product configuration

      I10        Reports dial security account status information

      I11        Displays high speed connection report

      I15        Reports caller ID information









                                MODEM CLOCK

  Type:                  Configuration

  Format:                AT [cmds] Kn [cmds]

  Description:           Controls the modem clock

        Command                              Function

          K0             If on-line, display current call duration; if
                         off-line, display the last calls duration

          K1             Display the actual time (set clock using
                         ATI3=HH:MM:SS K1)

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] Qn [cmds]

  Description:   Enables modem to send result codes to the DTE

    Command                              Function

       Q0        Result code sending enabled

       Q1        Result code sending disabled

       Q2        Suppress result codes when answering

                     SELECT CALL PROGRESS RESULT CODES

  Type:                  Configuration

  Format:                AT [cmds] Xn [cmds]

  Description:           Enables selection of tone detection and
                         associated result code format options

        Command                              Function

           X0            Busy and dial tone detection disabled; result
                         codes 0 - 4 enabled.

           X1            Busy and dial tone detection disabled; result
                         codes 0 - 5 & 10 enabled.

           X2            Busy tone detection disabled, dial tone
                         detection enabled; result codes 0 - 6 & 10
                         enabled.

           X3            Busy tone detection enabled, dial tone detection
                         disabled; result codes 0 - 5, 7 & 10 enabled.

           X4            Busy and dial tone detection enabled; result
                         codes 0 - 7 & 10 enabled.

           X5            Busy tone detection enabled; dial tone detection
                         disabled; all result codes enabled

           X6            All result codes enabled

           X7            Voice detection disabled; all result codes
                         enabled











                                   RESET

  Type:                  Configuration

  Format:                AT [cmds] &Zn [cmds]

  Description:           Reset the modem. If SW2/10 is set to off, revert
                         to the settings in NVRAM. If SW2/10 is set to
                         on, reset to the &F0 configuration template.

                          ADDITIONAL RESULT CODES

  Type:                Configuration

  Format:              AT [cmds] &An [cmds]

  Description:         Controls the display of the additional result
                       codes

       Command                              Function

         &A0           Do not display ARQ result codes

         &A1           Display ARQ result codes

         &A2           Display ARQ result codes, HST, V.32, V.FC or V.34
                       modulation indicator

         &A3           Display ARQ result codes and error control
                       indicator LAPM, HST, MNP, SYNC, or NONE

                             SERIAL PORT RATE

  Type:                Configuration

  Format:              AT [cmds] &Bn [cmds]

  Description:         Controls the serial port rate

       Command                              Function

         &B0           Variable serial port rate

         &B1           Fixed serial port rate

         &B2           In answer mode use fixed rate for ARQ calls and
                       variable rate for non ARQ calls.

                         DATA TERMINAL READY (DTR)

  Type:                  Configuration

  Format:                AT [cmds] &Dn [cmds]

  Description:           Selects modem response to DTR

            Note: The action each variant of &D causes depends on the
            setting of &Q

        Command                              Function

          &D0            Modem does not respond to DTR

          &D1            Modem goes to command mode after DTR goes is off

          &D2            Modem goes to command mode and disconnects
                         (hangs up) after DTR goes off; Auto-Answer is
                         disabled.

                          FACTORY DEFAULT PROFILE

  Type:             Configuration

  Format:           AT [cmds] &F [cmds]

  Description:      Sets values in active profile to values found in the
                    default profile

     Command                              Function

       &F0          Load No Flow Control template settings

       &F1          Load Hardware Flow Control template settings

       &F2          Load Software Flow Control template settings





                        TRANSMIT DATA FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Hn [cmds]

  Description:   Controls the transmit data flow

    Command                              Function

      &H0        Flow control disabled

      &H1        Hardware flow control enabled

      &H2        Software flow control enabled

      &H3        Hardware and software flow control enabled

                         RECEIVE DATA FLOW CONTROL

  Type:                  Configuration

  Format:                AT [cmds] &In [cmds]

  Description:           Controls the receive data flow control

        Command                             Jack Type

          &I0            Disables XON/XOFF flow control

          &I1            Modem acts on typed XON/XOFF commands, Ctrl -S,
                         or Ctrl -Q and passes them to remote device

          &I2            Modem acts on typed XON/XOFF commands but
                         removes them from data stream

          &I3            Hewlett Packard host mode

          &I4            Hewlett Packard terminal mode

          &I5            Enable flow control on the phone link when the
                         connection is not under error control

                             DATA COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Controls the data compression

    Command                              Function

      &K0        Data compression disabled

      &K1        Use auto enable/disable data compression

      &K2        Data compression always enabled

      &K3        Selective data compression

                               ERROR CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects the error control protocol

    Command                                Mode

      &M0        Normal mode, no error control

      &M4        Normal/ARQ mode

      &M5        ARQ asynchronous mode

      &M6        V.25bis synchronous mode









                              CONNECTION RATE

  Type:          Configuration

  Format:        AT [cmds] &Nn [cmds]

  Description:   Controls the connection rate

    Command                              Function

      &N0        Variable rate

      &N1        300bps

      &N2        1200bps

      &N3        2400bps

      &N4        4800bps

      &N5        7200bps

      &N6        9600bps

      &N7        12Kbps

      &N8        14.4Kbps

      &N9        16.8Kbps

      &N10       19.2Kbps

      &N11       21.6Kbps

      &N12       24Kbps

      &N13       26.4Kbps

      &N14       28.8Kbps

      &N15       31.2Kbps

      &N16       33.6Kbps

                            PULSE DIALING RATIO

  Type:          Configuration

  Format:        AT [cmds] &Pn [cmds]

  Description:   Selects pulse dial make/break ratio

    Command                              Function

      &P0        39/61ms at 10pps (North America)

      &P1        33/67ms at 10pps (Europe)

                                  RTS/CTS

  Type:           Configuration

  Format:         AT [cmds] &Rn [cmds]

  Description:    Selects RTS/CTS options

    Command                              Function

      &R0         CTS follows RTS in data mode; RTS is ignored in command
                  mode.

      &R1         CTS forced high, RTS is ignored.

      &R2         Enable hardware flow control of received data

















                           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 handshaking or connected

      &S2        DSR & CTS follows CD when carrier is lost

      &S3        DSR follows CD when carrier is lost

      &S4        Send the computer a DSR signal at the same time as the
                 CD

      &S5        Send DSR normally, and follow CTS with CD

                                TEST MODES

  Type:          Immediate

  Format:        AT [cmds] &Tn

  Description:   Selects test options

    Command                              Function

      &T0        End current test

      &T3        Begin local digital loopback

      &T4        Grant remote digital loopback request

      &T5        Deny remote digital loopback request

      &T6        Request remote digital loopback

      &T7        Request remote digital loopback and self-test

                           STORE ACTIVE PROFILE

  Type:            Configuration

  Format:          AT [cmds] &Wn [cmds]

  Description:     Writes the values for the active profile into the
                   non-volatile RAM

                              BREAK HANDLING

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Description:   Controls the break handling

    Command                              Function

      &Y0        Destructive, dont send break

      &Y1        Destructive, expedited break sent

      &Y2        Nondestructive, expedited break sent

      &Y3        Nondestructive, un-expedited break sent

                           STORE COMMAND STRING

  Type:              Configuration

  Format:            AT [cmds] &ZCn=(phone # & modifiers)

  Description:       Writes selected command string into the non-volatile
                     memory at location n

            Note: The command string can be up to 30 characters long;
            spaces do not count.







                             SECURITY ACCOUNTS

  Type:          Configuration

  Format:        AT [cmds] %An [cmds]

  Description:   Create and configure security accounts

                             SERIAL PORT RATE

  Type:          Configuration

  Format:        AT [cmds] %Bn [cmds]

  Description:   Remotely configure a modems serial port rate

    Command                              Function

      %B0        110bps

      %B1        300bps

      %B2        600bps

      %B3        1200bps

      %B4        2400bps

      %B5        4800bps

      %B6        9600bps

      %B7        19200bps

      %B8        38400bps

      %B9        57600bps

      %B10       115200bps

                           REMOTE CONFIGURATION

  Type:             Configuration

  Format:           AT [cmds] %Cn [cmds]

  Description:      Controls the remote configuration

     Command                              Function

       %C0          Defer configuration changes until the call is ended

       %C1          Cancel configuration changes and restore the original
                    configuration

       %C2          Force configuration changes to take effect
                    immediately

                          ERASE SECURITY SETTINGS

  Type:            Configuration

  Format:          AT [cmds] %En [cmds]

  Description:     Erases selected security settings

     Command                              Function

       %E1         Erase local access password

       %E2         Erase autopass password

       %E3         Erase passwords in accounts 0-9

       %E4         Erase phone numbers in accounts 0-9

       %E5         Disable account, dialback, and new number fields in
                   accounts 0-9













                           REMOTE CONFIGURATION

  Type:          Configuration

  Format:        AT [cmds] %Fn [cmds]

  Description:   Configure another devices data remotely

    Command                              Function

      %F0        No parity, 8 data bits

      %F1        Mark parity, 7 data bits

      %F2        Odd parity, 7 data bits

      %F3        Even parity, 7 data bits

                           LOCAL ACCESS PASSWORD

  Type:          Configuration

  Format:        AT [cmds] %Ln [cmds]

  Description:   Set local access password

                             PASSWORD SECURITY

  Type:          Immediate

  Format:        AT [cmds] %P [cmds]

  Description:   Disable password security

                             SECURITY ACCOUNTS

  Type:          Configuration

  Format:        AT [cmds] %Sn [cmds]

  Description:   Access security accounts

                             TONE FREQUENCIES

  Type:          Configuration

  Format:        AT [cmds] %Tn [cmds]

  Description:   Enalbes recognition of the tone frequencies

                              ASSIGN PASSWORD

  Type:              Immediate

  Format:            AT [cmds] %V=PWn [cmds]

  Description:       Assign the password in account n in security account
                     as autopass password

                                   HELP

  Type:           Configuration

  Format:         AT [cmds] #$ [cmds]

  Description:    Display the help pannels for the octothorpe (#) command
                  set

















                                 CALLER ID

  Type:            Configuration

  Format:          AT [cmds] #CID=n [cmds]

  Description:     Controls the Caller ID function

     Command                              Function

     #CID=0        Caller ID disabled

     #CID=1        Caller ID displays formatted data

     #CID=2        Caller ID displays raw hexadecimal data

     #CID=3        Enable caller ID with formatted output and name
                   suppressed

     #CID=4        Enable caller ID but do not transmit the information
                   to computer

                            S(status) -REGISTERS

                          BIT-MAPPED REGISTER S13

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

  Default:            170

  Range:              0-174

  Unit:               Bit-mapped

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

   Bit       Value                         Function

    0             1   Reset when DTR drops

    1             2   Reverse normal auto answer mode

    2             4   Disable 250 msec pause before result code display

    3             8   On DTR signal, Autodial the number stored in NVRAM
                      at position 0

    4            16   At power on/reset, auto dial number stored in NVRAM
                      at position 0

    5            32   Disable HST

    6            64   Disable MNP level 3

    7           128   Hardware reset

                          BIT-MAPPED REGISTER S14

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

  Default:            170

  Range:              0-174

  Unit:               Bit-mapped

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

   Bit       Value                         Function

    0             1   Disconnect on escape code

    1             2   Send result codes only when originating a call



















                            BIT MAPPED REGISTER

  Type:                  Register

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

  Unit:                  Bit-mapped

  Description:           Controls fallback

    Bit       Value                          Function

     0              1    Disable the modems extra high frequency
                         equalization if it causes problems on shorter
                         -link calls- for HST modulation only

     1              2    Disable online fallback

     2              4    Disable 450bps back channel ---HST only

     3              8    Reset non-ARQ mode transmit buffer from
                         1.5Kbytes to 128

     4             16    Disable MNP level 4

     5             32    Set backspace key to delete

     6             64    Alternate MNP setting for some 2400bps MNP
                         modems not made by U.S. Robotics of Microcom.

     7            128    Custom applications only

                          BIT MAPPED REGISTER S16

  Type:            Register

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

  Unit:            Bit-mapped

  Description:     Controls loopback tests and test pattern

   Bit    Value                           Function

    2         4    Test pattern

    3         8    Remote digital loopback

                             INACTIVITY TIMER

  Type:                Register

  Format               AT [cmds] S19=n [cmds]

  Default:             Unidentified

  Range:               Unidentified

  Unit:                Minute

  Description:         Sets the duration in minutes for the inactivity
                       timer, S19=0 disables the timer

                               BREAK LENGTH

  Format              AT [cmds] S21=n [cmds]

  Default:            Unidentified

  Range:              Unidentified

  Unit:               10msec

  Description:        Sets the duration of breaks sent from the modem to
                      the computer or terminal

                               XON CHARACTER

  Format         AT [cmds] S22=n [cmds]

  Default:       17

  Range:         Unidentified

  Unit:          ASCII

  Description:   Stores the ASCII code for XON character

                       FLOW CONTROL CHARACTER - XOFF

  Format         AT [cmds] S23=n [cmds]

  Default:       19

  Range:         Unidentified

  Unit:          ASCII

  Description:   Stores the ASCII code for the XOFF character

                                DSR SIGNAL

  Type:                Register

  Format               AT [cmds] S24=n [cmds]

  Default:             150

  Range:               Unidentified

  Unit:                .02 sec

  Description:         Sets the duration between pulsed DSR signals when
                       the modem is set to &S2 or &S3.

                              DSR RECOGNITION

  Type:          Register

  Format         AT [cmds] S25=n [cmds]

  Default:       5

  Range:         Unidentified

  Unit:          .1 second

  Description:   Sets DTR recognition time

                          BITMAPPED REGISTER S27

  Format            AT [cmds] S27=n [cmds]

  Default:          Unidentified

  Range:            0

  Unit:             Bit-mapped

  Description:      Selects modulation

   Bit     Value                          Function

    0          1    Enable ITU-T V.21

    1          2    Enable unencoded modulation in V.32 mode

    2          4    Disable V.32 modulation

    3          8    Disabl;e 2100Hz answer tone

    4           0   Complete handshaking sequence:V.42 detection, LAPM
                    error control, MNP
               16
                    Disable MNP
               32
                    Disable V.42 detection and LAPM
              48
                    Disable detection phase

    5           0   Complete handshaking sequence:V.42 detection, LAPM
                    error control, MNP
               16
                    Disable MNP
           32 48
                    Disable V.42 detection and LAPM

                    Disable detection phase

    7        128    Unusual software incompatibility









                          BIT-MAPPED REGISTER S28

  Format               AT [cmds] S28=n [cmds]

  Default:             Unidentified

  Range:               8

  Unit:                .1 second

  Description:         Sets the duration of the extra 3000/600 Hz answer
                       tones sent during handshaking.

                          BITMAPPED REGISTER S29

  Type:          Register

  Format         AT [cmds] S29=n [cmds]

  Default:       20

  Range:         Unidentified

  Unit:          .1 sec

  Description:   Sets the duration of the V.21 answer tone

                             VOICE/DATA SWITCH

  Type:          Register

  Format         AT [cmds] S32=n [cmds]

  Default:       9

  Range:         Unidentified

  Unit:          Unidentified

  Description:   Assign voice/data switch function

     Value                               Function

       0         Disabled

       1         Voice/data - originate mode

       2         Voice/data - answer mode

       3         Radial last number

       4         Dial number stored at position 0

       5         Auto answer on/off toggle

       6         Reset modem

       7         Initiate remote digital loopback

       8         Busy out the phone line toggle

       9         Execute stored command





























                          BIT-MAPPED REGISTER S34

  Type:                Register

  Format:              AT [cmds] S34n [cmds]

  Default:             0

  Range:               Unidentified

  Unit:                Unidentified

  Description:         Controls V.32bis

    Bit      Value                          Function

     0            1    Disable V.32bis

     1            2    Disable modems enhanced proprietary V.32bis
                       modulation

     2            4    Disable the faster retrains that occure during
                       proprietary V.32terbo modulation

     3            8    Enable V.23

     4           16    Force the MR LED to show DSR

     5           32    Enable MI/MIC

     6           64    Disable the remote access busy message

     7          128    Disable V.32terbo

                              TRANSMIT BUFFER

  Type:                   Register

  Format                  AT [cmds] S38n [cmds]

  Description:            Sets the time before a forced hang up and
                          clearing of the transmit buffer when DTR drops
                          during an ARQ call.

                               REMOTE ACCESS

  Type:                   Register

  Format                  AT [cmds] S41=n [cmds]

  Description:            Sets the number of allowable remote access
                          login attempts, thus enabling or disabling
                          remote access.

                      REMOTE ACCESS ESCAPE CHARACTER

  Type:             Register

  Format            AT [cmds] S42=n [cmds]

  Default:          126

  Range:            Unidentified

  Unit:             Unidentified

  Description:      Stores the ASCII decimal code for the remote access
                    escape character.

                            GUARD TIME DURATION

  Type:            Register

  Format           AT [cmds] S43=n [cmds]

  Default:         200

  Unit:            .02 sec

  Description:     Sets the duration of the guard time for the remote
                   access sequence









                    REESTABLISHING CONNECTION INTERVAL

  Format                 AT [cmds] S44=n [cmds]

  Default:               15

  Description:           Sets the duration of the interval between losing
                         carrier and reestablishing a connection

                          BIT-MAPPED REGISTER S51

  Format           AT [cmds] S51=n [cmds]

  Default:         0

  Range:           Unidentified

  Unit:            Bit-mapped

  Description:     MNP/V.42 control

   Bit    Value                           Function

    0         1    Disable MNP/V.42 for V.22

    1         2    Disable MNP/V.42 for V.22bis

    2         4    Disable MNP/V.42 for V.32/V.32bis/V.32terbo

    6        64    Disable selective reject

    7       128    Enable handset exclusion delay

                          BIT MAPPED REGISTER S53

  Type:                 Register

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

  Description:      Bit mapped register

     Bit        Value                       Function

      0             1   Dial security enabled

      1             2   Prompting enabled

      2             4   Local access password protection enabled

                          BIT MAPPED REGISTER S54

  Type:                 Register

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

  Description:      Bit mapped register

     Bit        Value                       Function

      0             1   Disable 2400 symbol rate

      1             2   Disable 2743 symbol rate

      2             4   Disable 2800 symbol rate

      3             8   Disable 3000 symbol rate

      4            16   Disable 3200 symbol rate

      5            32   Disable 3429 symbol rate

      6            64   Disable Call Indicate

      7           128   Disable V.8













                          BIT-MAPPED REGISTER S55

  Type:            Register

  Format           AT [cmds] S55=n [cmds]

  Description:     Bit-mapped register

   Bit    Value                           Function

    0         1    Disable 8S-2D mapping

    1         2    Disable 16S-4D mapping

    2         4    Disable 32S-2D mapping

    3         8    Disable 64S-4D mapping

    7       128    Enable phase roll detection

                          BIT-MAPPED REGISTER S56

  Type:            Register

  Format           AT [cmds] S56 [cmds]

  Description:     Bit-mapped register

   Bit    Value                           Function

    0         1    Disable non-linear coding

    1         2    Disable TX level deviation

    2         4    Disable pre-emphasis

    3         8    Disable precoding

    4        16    Disable shaping

    5        32    Disable 31.2 and 33.6 speeds in V.34

    6        64    Disable V.34

    7       128    Disable V.FC

                          BIT-MAPPED REGISTER S69

  Type:            Register

  Format:          AT [cmds] S69=n [cmds]

  Description:     Bit-mapped register

   Bit    Value                           Function

    0         1    Disable plug and play signaling

    1         2    Enable carrier loss redial

                          BIT-MAPPED REGISTER S70

  Type             Register or Configuration

  Format           AT [cmds] S70=n [cmds]

  Description      Bit-mapped register

   Bit    Value                           Function

    0         1    Enable recognition of Ring A

    1         2    Enable recognition of Ring B

    2         4    Enable recognition of Ring C

    3         8    Enable recognition of Ring D

