
HAYES MICROCOMPUTER PRODUCTS, INC.

ACCURA ISDN

Card Type                    ISDN TA
Chipset                      Siemens
ISDN Protocol                V.110, V.120, X.75, PPP
Switch Type                  5ESS, DMS100, 1TR6, EWSD, DSS1, NI-1
Data Bus                     Serial
Error Correction/Compression V.42bis

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Analog line 1 in            CN1      DC power in                  CN5

  Analog line 2 in            CN2      Power switch                 SW1

  ISDN line out               CN3      Auto-dial switch             SW2

  Serial port                 CN4

            Note: Pressing the auto-dial switch while connected will
            disconnect the call.

                       DIAGNOSTIC LED(S) (POWER-UP)

    LED           Color            Status               Condition

    LNK       Unidentified           On           TA is testing memory

    LNK       Unidentified        Blinking         Memory test failed

    B1        Unidentified           On             TA is testing ISDN
                                                  controller interface

    B1        Unidentified        Blinking      ISDN controller interface
                                                       test failed

    B2        Unidentified           On             TA is testing ISDN
                                                  controller functions

    B2        Unidentified        Blinking       ISDN controller function
                                                       test failed

    AA        Unidentified           On             TA is testing HDLC
                                                        functions

    AA        Unidentified        Blinking      HDLC function test failed

    LNK       Unidentified           On             All tests passed

            Note: On power-up, the TA should go through the tests in the
            order indicated above. A blinking LED or any pattern other
            than the ones shown above indicate an error.

                   DIAGNOSTIC LED(S) (NORMAL OPERATION)

   LED           Color           Status               Condition

   PWR       Unidentified          On                Power is on

   PWR       Unidentified         Off                Power is off

   LNK       Unidentified          On         Physical ISDN layer active

   LNK       Unidentified         Off        Physical ISDN layer inactive

   LNK       Unidentified       Blinking        D-channel link layer in
                                                   multi-frame mode

    B1       Unidentified          On            B1 channel connected

    B1       Unidentified         Off          B1 channel not connected

    B1       Unidentified     Random blink   B1 channel is retransmitting
                                                       packets

    B1       Unidentified       1 blink       B1 channel is protected by
                                                single DES encryption

    B1       Unidentified       3 blinks      B1 channel is protected by
                                                triple DES encryption

    B2       Unidentified          On            B2 channel connected

    B2       Unidentified         Off          B2 channel not connected

    B2       Unidentified     Random blink   B2 channel is retransmitting
                                                       packets

    B2       Unidentified       1 blink       B2 channel is protected by
                                                single DES encryption

    B2       Unidentified       3 blinks      B2 channel is protected by
                                                triple DES encryption

    AA       Unidentified          On            Auto-answer enabled

    AA       Unidentified         Off            Auto-answer disabled

    AA       Unidentified       Blinking           Phone is ringing

   DTR       Unidentified          On             DTR signal is high

   DTR       Unidentified         Off             DTR signal is low

    TX       Unidentified       Blinking      Serial port is transmitting
                                                      data to TA

    TX       Unidentified         Off             Serial port is not
                                               transmitting data to TA

    RX       Unidentified       Blinking       Serial port is receiving
                                                     data from TA

    RX       Unidentified         Off        Serial port is not receiving
                                                     data from TA

    1        Unidentified          On         Analog line 1 is off-hook

    1        Unidentified         Off          Analog line 1 is on-hook

    2        Unidentified          On         Analog line 2 is off-hook

    2        Unidentified         Off          Analog line 2 is on-hook

                 SUPPORTED STANDARD COMMANDS

                      Basic AT Commands

  +++, comma, A/

  A, E, L, M, O, V

  &C, &D, &F, &W, &Z

                         S-Registers

  S0, S1, S2, S3, S4, S5, S7, S8

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

                          ADDRESS IDENTIFICATION

  Type:                 Immediate

  Format:               AT [cmds] &ZOy=YaNb<#>/Zcxxxx/ [cmds]

                        AT [cmds] &ZOy=A/Zcxxxx/ [cmds]

  Description:          Sets the modems call identification to identify
                        itself to remote ISDN devices. A indicates that
                        no number is specified.

  Note:                 One of either the YaNb<#> arguments or the
                        A/Zcxxxx/ must be present.

       Argument                             Function

         y=A            Set address for analog adapter 1.

         y=B            Set address for analog adapter 2.

         y=I            Set address for ISDN.

         a=0            Unknown number locality.

         a=1            International number.

         a=2            National number.

         a=3            Network number.

         a=4            Subscriber number.

         a=6            Abbreviated number.

         b=0            Unknown number type.

         b=1            ISDN type number.

         b=3            X.121 data type number.

         b=8            National standard number.

         b=9            Private number.

         c=0            NSAP subaddress of IA5 characters, AFI=0x50.

         c=2            User specified subaddress of IA5 characters.

                  ADDRESS IDENTIFICATION - INCOMING CALL

  Type:                  Immediate

  Format:                AT [cmds] &ZIn=<#> [cmds]

  Description:           Compares the number for an incoming call to the
                         address stored for each value of n. If the
                         numbers match, the call is routed to the
                         appropriate mode and protocol.

       Argument                             Function

          n=0            Set address for X.75 ISDN.

          n=1            Set address for V.110 ISDN.

          n=2            Set address for V.120 ISDN.

          n=3            Set address for PPP asynchronous to HDLC
                         conversion.

          n=4            Set address for protocol auto-detection.

          n=6            Set address for analog adapter 1.

          n=7            Set address for analog adapter 2.

                           AUTO-ANSWER PRIORITY

  Type:             Configuration

  Format:           AT [cmds] &Ln [cmds]

  Description:      Selects which analog adapter will answer incoming
                    analog calls first.

     Command                              Function

       &L0          Analog adapter 1 answers first.

       &L1          Analog adapter 2 answers first.

               BANDWIDTH ON DEMAND - HIGH TRAFFIC THRESHOLD

  Type:                  Register

  Format:                AT [cmds] JAn [cmds]

  Default:               48

  Range:                 0 - 255

  Unit:                  1 Kbps

  Description:           Sets the level that the bandwidth in use must be
                         over for the time set by the KAM and KAS
                         commands for the TA to attempt to add another B
                         channel connection.

             BANDWIDTH ON DEMAND - HIGH TRAFFIC TIME, MINUTES

  Type:                  Register

  Format:                AT [cmds] KAMn [cmds]

  Default:               0

  Range:                 0 - 63

  Unit:                  1 minute

  Description:           Sets the amount of time, in minutes, that the
                         bandwidth in use set by the JA command must be
                         exceeded for the TA to attempt to add another B
                         channel connection.

             BANDWIDTH ON DEMAND - HIGH TRAFFIC TIME, SECONDS

  Type:                  Register

  Format:                AT [cmds] KASn [cmds]

  Default:               0

  Range:                 0 - 63

  Unit:                  1 second

  Description:           Sets the amount of time, in seconds, that the
                         bandwidth in use set by the JA command must be
                         exceeded for the TA to attempt to add another B
                         channel connection.

                BANDWIDTH ON DEMAND - LOW TRAFFIC THRESHOLD

  Type:                  Register

  Format:                AT [cmds] JSn [cmds]

  Default:               32

  Range:                 0 - 255

  Unit:                  1 Kbps

  Description:           Sets the level that the bandwidth in use must be
                         under for the time set by the KSM and KSS
                         commands for the TA to drop a B channel
                         connection.

              BANDWIDTH ON DEMAND - LOW TRAFFIC TIME, MINUTES

  Type:                  Register

  Format:                AT [cmds] KSMn [cmds]

  Default:               0

  Range:                 0 - 63

  Unit:                  1 minute

  Description:           Sets the amount of time, in minutes, that the
                         bandwidth in use set by the JS command must be
                         under for the TA to drop a B channel connection.

              BANDWIDTH ON DEMAND - LOW TRAFFIC TIME, SECONDS

  Type:                  Register

  Format:                AT [cmds] KSSn [cmds]

  Default:               0

  Range:                 0 - 63

  Unit:                  1 second

  Description:           Sets the amount of time, in seconds, that the
                         bandwidth in use set by the JS command must be
                         under for the TA to drop a B channel connection.

                          BIT-MAPPED REGISTER S15

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

  Default:             130

  Range:               0 - 158

  Description:         Controls active profile and data format.

    Bit      Value                          Function

   1, 0           00   Use even parity.

                  01   Use odd parity.

                 10    Do not use parity.

     2             0   Use 1 stop bit.

                  1    Use 2 stop bit.

   4, 3           00   Use 10-bit characters.

                  01   Use 11-bit characters.

                  10   Use 9-bit characters.

                 11    Use 8-bit characters.

  7, 6, 5        000   Profile 0 active at power-up.

                 001   Profile 1 active at power-up.

                 010   Profile 2 active at power-up.

                 011   Profile 3 active at power-up.

                100    Factory defaults active at power-up.

                          BIT-MAPPED REGISTER S21

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

  Default:         154

  Range:           0 - 220

  Description:     Controls DTR, CTS, CD, and DSR signals, and speaker
                   options.

   Bit    Value                           Function

    0         0    Not used.

  2, 1        00   Speaker disabled.

              01   Speaker enabled until carrier signal detected

             10    Speaker enabled.

    3          0   DSR forced high.

              1    DSR normal.

    4          0   CD forced high.

              1    CD normal.

    5         0    Not used.

  7, 6        00   DTR is forced on.

              01   Dial default number on high DTR; hang up on low DTR.

              10   Low DTR hangs up and returns to command mode.

             11    Low DTR hangs up and resets the modem to profile 0.

                          BIT-MAPPED REGISTER S23

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

  Default:             105

  Range:               0 - 127

  Description:         Controls result codes, dialing, and echo.

    Bit      Value                          Function

     0             0   Command echoing disabled.

                  1    Command echoing enabled.

     1            0    Not used.

     2             0   Insertion during phone call disabled.

                  1    Insertion during phone call enabled.

  5, 4, 3        000   Basic result codes only enabled.

                 001   Basic and connection speed result codes enabled.

                 010   Basic and connection speed result codes and
                       dialtone detection enabled.
                 011
                       All result codes except dialtone detection
                 100   enabled.

                 101   All result codes enabled.

                 110   All result codes plus DTE speed and error control
                       level enabled.
                111
                       All result codes plus ARQ enabled.

                       All result codes plus ARQ and error control level
                       enabled.

     6             0   Display result codes in numeric form.

                  1    Display result codes in long form.

                          BIT-MAPPED REGISTER S35

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

  Default:               0

  Range:                 0 - 144

  Description:           Controls 4800bps V.32, handshake interruption,
                         V.26bis mode, leased line transmission
                         attenuation, Selective Reject, password
                         protection, and extended result codes.

   Bit        Value                          Function

  3 - 0          0000    Not used.

    4                0   Modem will not dial default number when
                         Data/Voice button is pressed
                    1
                         Modem will dial default number when Data/Voice
                         button is pressed

   6, 5            00    Not used.

    7                0   Connection speed result codes disabled on error
                         correcting connection.
                    1
                         Connection speed result codes enabled on error
                         correcting connection.

                          BIT-MAPPED REGISTER S38

  Format:          AT [cmds] S38=n [cmds]

  Default:         0

  Range:           0 - 9

  Description:     Controls auto-dial and CD signal.

   Bit    Value                           Function

    0          0   Auto-dial of default number disabled.

              1    Auto-dial of default number enabled.

   2-1       00    Not used.

    3          0   CD normal.

              1    CD according to UNIX standard.

                          BIT-MAPPED REGISTER S42

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

  Default:          0

  Range:            0 - 104

  Description:      Controls escape sequence, data/voice switch, and RING
                    result codes.

   Bit     Value                          Function

  2 - 0      000    Not used.

    3           0   Escape sequence enabled in answer mode.

               1    Escape sequence disabled in answer mode.

    4          0    Not used.

    5           0   Data/Voice switch enabled.

               1    Data/Voice switch disabled.

    6           0   Enable RING result.

               1    Disable RING result.

                          BIT-MAPPED REGISTER S44

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

  Default:            0

  Range:              0 - 24

  Description:        Controls cyclic dialing and DSR signal.

   Bit      Value                          Function

    3             0   Modem will dial only stored number specified by an
                      executed DS command.
                 1
                      Modem will cycle through stored numbers on DS
                      command until modem connects.

    4             0   DSR normal.

                 1    DSR follows DTR.

                          BIT-MAPPED REGISTER S80

  Format:            AT [cmds] S80=n [cmds]

  Default:           0

  Range:             0 - 208

  Description:       Controls originate/answer mode and low-layer
                     compatibility information.

   Bit      Value                          Function

  3 - 0      0000    Not used.

    4            0   Analog adapter 2 does not send low-level
                     compatibility information.
                1
                     Analog adapter 2 sends low-level compatibility
                     information.

    5           0    Not used.

    6            0   ISDN does not send low-level compatibility
                     information.
                1
                     ISDN sends low-level compatibility information.

    7            0   Analog adapter 1 does not send low-level
                     compatibility information.
                1
                     Analog adapter 1 sends low-level compatibility
                     information.

                          BIT-MAPPED REGISTER S83

  Format:               AT [cmds] S83=n [cmds]

  Default:              Unidentified

  Range:                0 - 53

  Description:          Controls the Loopback 4 function, V.42bis
                        compression, and the default dialing device.

    Bit       Value                         Function

     0              0   Loopback 4 disabled.

                   1    Loopback 4 enabled.

     1             0    Not used.

     2              0   V.42bis compression disabled.

                   1    V.42bis compression enabled.

     3             0    Not used.

   5, 4            00   Originate calls with analog adapter 1 by default.

                   10   Originate calls with ISDN by default.

                  11    Originate calls with analog adapter 2 by default.

                         BIT-MAPPED REGISTER S118

  Format:                AT [cmds] S118=n [cmds]

  Default:               Unidentified

  Range:                 0 - 245

  Description:           Controls dial-in mode, default line speed,
                         low-speed service type, and analog call
                         acceptance.

    Bit       Value                          Function

     0               0   Dial-in calls may be answered.

                    1    Dial-in calls may not be answered.

     1              0    Not used.

     2               0   Use 64Kbps speed for ISDN.

                    1    Use 56Kbps speed for ISDN.

     3              0    Not used.

     4               0   Use 3.1KHz service for analog line 2.

                    1    Use voice service for analog line 2.

     5               0   Use 3.1KHz service for analog line 1.

                    1    Use voice service for analog line 1.

     6               0   All analog calls will be answered.

                    1    Only analog calls with matching MSN will be
                         answered.

     7               0   Incoming analog calls will be answered.

                    1    Incoming analog calls will be ignored.

                         BIT-MAPPED REGISTER S119

  Format:                AT [cmds] S119=n [cmds]

  Default:               Unidentified

  Range:                 0 - 54

  Description:           Controls callback function, signalling DDI, call
                         acceptance, V.110 minimum speed, and MSN
                         function.

   Bit        Value                          Function

    0                0   Callback function disabled.

                    1    Callback function enabled.

    1                0   Point-to-point signaling DDI function disabled.

                    1    Point-to-point signaling DDI function enabled.

    2                0   Multipoint signaling DDI function disabled.

                    1    Multipoint signaling DDI function enabled.

    3                0   All calls will be answered.

                    1    Only calls with matching MSN will be answered.

    4                0   V.110 speed set to 19.2Kbps if local serial port
                         speed is 19.2Kbps or faster.
                    1
                         V.110 speed set to 38.4Kbps if local serial port
                         speed is 38.4Kbps or faster.

    5                0   MSN functions normally.

                    1    Treat MSN settings as subaddresses.

                             CALL CHARGE - B1

  Type:                  Register

  Format:                AT [cmds] S120? S121? [cmds]

  Default:               Read-only

  Range:                 0-65535

  Unit:                  N/A

  Description:           These registers store the accumulated call
                         charge for the first ISDN B channel. S120 stores
                         the Most Significant Byte, and S121 stores the
                         Least Significant Byte. To obtain the correct
                         value, use S120 * 256 + S121.

                             CALL CHARGE - B2

  Type:                  Register

  Format:                AT [cmds] S122? S123? [cmds]

  Default:               Read-only

  Range:                 0-65535

  Unit:                  N/A

  Description:           These registers store the accumulated call
                         charge for the second ISDN B channel. S122
                         stores the Most Significant Byte, and S123
                         stores the Least Significant Byte. To obtain the
                         correct value, use S122 * 256 + S123.

                                 CALLER ID

  Type:          Register

  Format:        AT [cmds] S84=n [cmds]

  Description:   Controls the Caller ID function of the TA.

    Command                              Function

     S84=0       Caller ID enabled.

     S84=16      Caller ID disabled.

                           CALLER ID INFORMATION

  Type:          Immediate

  Format:        AT [cmds] *T [cmds]

  Description:   Displays the last caller ID information.

                             CHARACTER LENGTH

  Type:          Configuration

  Format:        AT [cmds] *Cn [cmds]

  Description:   Sets length of character.

    Command                              Function

      *C0        Set 10-bit character.

      *C1        Set 11-bit character.

      *C2        Set 9-bit character.

      *C3        Set 8-bit character.

                   COMPRESSION AND ERROR CORRECTION MODE

  Type:            Configuration

  Format:          AT [cmds] &Knn [cmds]

  Description:     Selects the type of data compression used over ISDN
                   connections.

     Command                              Function

      &K00         Compression disabled for ISDN calls.

      &K44         V.42bis enabled for ISDN calls.

                          CONFIGURATION PROFILES

  Type:          Immediate

  Format:        AT [cmds] &Vn [cmds]

  Description:   Displays active and stored configuration profiles.

    Command                              Function

      &V0        Displays current settings.

      &V1        Displays profile 0.

      &V2        Displays profile 1.

      &V3        Displays profile 2.

      &V4        Displays profile 3.

      &V5        Displays factory defaults.

      &V6        Displays analog adapter 1 settings.

      &V7        Displays analog adapter 2 settings.

                           DEFAULT PHONE NUMBER

  Type:          Configuration

  Format:        AT [cmds] *Dn [cmds]

  Default:       0

  Range:         0-39

  Unit:          N/A

  Description:   Sets the default phone number to memory location n.

                           DEFAULT PHONE NUMBER

  Type:          Register

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

  Default:       0

  Range:         0-39

  Unit:          N/A

  Description:   Sets the default phone number to memory location n.

                                DES KEY SET

  Type:                  Configuration

  Format:                AT [cmds] CKxxxx [cmds]

  Description:           Sets the key to be used for DES encryption. The
                         key must be between 15 and 65 characters.

                                DIAGNOSTICS

  Type:          Immediate

  Format:        AT [cmds] CG [cmds]

  Description:   Performs modem diagnostics.

                                   DIAL

  Type:                 Immediate

  Format:               AT [cmds] D<#>

                        AT [cmds] DYaNb<#>/Zcxxxx/

                        AT [cmds] DA/Zcxxxx/

  Description:          Dials telephone number according to any modifiers
                        included in the string.

       Modifier                             Function

          DA            Dial with analog adapter 1.

          DB            Dial with analog adapter 2.

          DI            Dial with ISDN.

          DL            Re-dial last number.

         DSm+n          Number in memory location m dialed. If n is also
                        specified, TA will make a bundled call.

          DW            Dialing resumed following dial tone detection.

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

          N0            Unknown number type.

          N1            ISDN type number.

          N3            X.121 data type number.

          N8            National standard number.

          N9            Private number.

          Y0            Unknown number locality.

          Y1            International number.

          Y2            National number.

          Y3            Network number.

          Y4            Subscriber number.

          Y6            Abbreviated number.

          Z0            NSAP subaddress of IA5 characters, AFI=0x50.

          Z2            User specified subaddress of IA5 characters.

                           DIALING MODE DEFAULT

  Type:            Configuration

  Format:          AT [cmds] &On [cmds]

  Description:     Selects which device the TA will originate calls with
                   by default.

     Command                              Function

       &O0         Originate calls with analog adapter 2.

       &O2         Originate calls with ISDN.

       &O3         Originate calls with analog adapter 1.

                            DISPLAY CALL CHARGE

  Type:          Immediate

  Format:        AT [cmds] CH? [cmds]

  Description:   Displays the number of charge units for the last call.

                       DYNAMIC BANDWIDTH ALLOCATION

  Type:                  Configuration

  Format:                AT [cmds] CEn [cmds]

  Description:           Selects whether dynamic bandwidth allocation
                         will be used to allow simultaneous data and
                         voice calls.

        Command                              Function

          CE0            Dynamic bandwidth allocation disabled.

          CE1            Dynamic bandwidth allocation enabled.

                      ENDPOINT DISCRIMINATOR ADDRESS

  Type:                Configuration

  Format:              AT [cmds] EPD=<a,b,c,d...s,t> [cmds]

  Example:             ATEPD=<284,254,124,62,5>

  Range:               0 - 255

  Description:         Sets the endpoint discriminator address for
                       multipoint PPP systems. Up to twenty numbers may
                       be specified.

                             FIRMWARE DOWNLOAD

  Type:          Immediate

  Format:        AT [cmds] UPX

  Description:   Begins an XMODEM download to the modem firmware.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Hn [cmds]

  Description:   Selects the type of flow control to use.

    Command                              Function

      &H0        Flow control disabled.

      &H3        Hardware flow control enabled.

      &H4        Software flow control enabled.

                               FLOW CONTROL

  Type:          Register

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

  Description:   Selects the type of flow control to use.

    Command                              Function

     S27=0       Flow control disabled.

     S27=24      Hardware flow control enabled.

     S27=32      Software flow control enabled.

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

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

  Default:       19

  Range:         0-255

  Unit:          1 ASCII character

  Description:   Sets the character used to represent XOFF.

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S31=n [cmds]

  Default:       17

  Range:         0-255

  Unit:          1 ASCII character

  Description:   Sets the character used to represent XON.

                                   HELP

  Type:          Immediate

  Format:        AT [cmds] $ [cmds]

  Description:   Displays help on the basic (no prefix) AT commands.

                HIGH LAYER COMPATIBILITY - ANALOG ADAPTER 1

  Type:                  Register

  Format:                AT [cmds] S111=n [cmds]

  Description:           Sets high layer compatibility information for
                         analog adapter 1 in non-1TR6 modes.

  Note:                  This table should not be used in 1TR6 mode; see
                         SERVICE INDICATOR DETAILS for settings.

        Command                             Function

        S111=0           High layer compatibility information not sent.

        S111=1           HLC information set to telephone.

        S111=4           HLC information set to fax.

        S111=40          HLC information set to F.220 Teletex.

        S111=49          HLC information set to F.200 Teletex.

        S111=50          HLC information set to F.300/T110 video service.

        S111=53          HLC information set to F.60 telex.

        S111=56          HLC information set to X.400 message handling.

        S111=65          HLC information set to X.200 OSI application.

                HIGH LAYER COMPATIBILITY - ANALOG ADAPTER 2

  Type:                  Register

  Format:                AT [cmds] S108=n [cmds]

  Description:           Sets high layer compatibility information for
                         analog adapter 2 in non-1TR6 modes.

  Note:                  This table should not be used in 1TR6 mode; see
                         SERVICE INDICATOR DETAILS for settings.

        Command                             Function

        S108=0           High layer compatibility information not sent.

        S108=1           HLC information set to telephone.

        S108=4           HLC information set to fax.

        S108=40          HLC information set to F.220 Teletex.

        S108=49          HLC information set to F.200 Teletex.

        S108=50          HLC information set to F.300/T110 video service.

        S108=53          HLC information set to F.60 telex.

        S108=56          HLC information set to X.400 message handling.

        S108=65          HLC information set to X.200 OSI application.

                 HIGH LAYER COMPATIBILITY - ISDN INTERFACE

  Type:                  Register

  Format:                AT [cmds] S110=n [cmds]

  Description:           Sets high layer compatibility information for
                         the ISDN interface in non-1TR6 modes.

  Note:                  This table should not be used in 1TR6 mode; see
                         SERVICE INDICATOR DETAILS for settings.

        Command                             Function

        S110=0           High layer compatibility information not sent.

        S110=1           HLC information set to telephone.

        S110=4           HLC information set to fax.

        S110=40          HLC information set to F.220 Teletex.

        S110=49          HLC information set to F.200 Teletex.

        S110=50          HLC information set to F.300/T110 video service.

        S110=53          HLC information set to F.60 telex.

        S110=56          HLC information set to X.400 message handling.

        S110=65          HLC information set to X.200 OSI application.

                               HOOK CONTROL

  Type:          Immediate

  Format:        AT [cmds] Hn [cmds]

  Description:   Hangs up ISDN and analog lines.

    Command                              Function

       H0         Hangs up line currently in use.

       H3         Hangs up analog line 1.

       H4         Hangs up analog line 2.

                              HOOK FLASH TIME

  Type:               Register

  Format:             AT [cmds] S56=n [cmds]

  Default:            50

  Range:              0-255

  Unit:               10ms

  Description:        Selects the amount of time the analog adapter goes
                      on-hook for a hook flash.

                            I-FIELD DATA LENGTH

  Type:                  Register

  Format:                AT [cmds] S114=n [cmds]

                         AT [cmds] S115=n [cmds]

  Default:               Unidentified

  Range:                 0-65535

  Unit:                  N/A

  Description:           These registers set the data length for the
                         I-field. S114 stores the Most Significant Byte,
                         and S115 stores the Least Significant Byte. To
                         set the correct value for S114, use the formula
                         S114 = INT(value/256). To set S115, use the
                         formula S115 = value - S114 * 256.

                          ISDN BUNDLE CONNECTION

  Type:               Configuration

  Format:             AT [cmds] &Jn [cmds]

  Description:        Selects when the modem will attempt to make a
                      two-channel bundle connection.

      Command                              Function

        &J0           Bundle connections disabled.

        &J1           Bundle connections enabled on answer only.

        &J2           Bundle connections enabled on originate only.

        &J3           Bundle connections enabled.

                          ISDN BUNDLE CONNECTION

  Type:               Configuration

  Format:             AT [cmds] S87=n [cmds]

  Description:        Selects when the modem will attempt to make a
                      two-channel bundle connection.

      Command                              Function

       S87=0          Bundle connections disabled.

       S87=32         Bundle connections enabled on answer only.

       S87=64         Bundle connections enabled on originate only.

       S87=96         Bundle connections enabled.

                             ISDN PACKET SIZE

  Type:             Configuration

  Format:           AT [cmds] CLn [cmds]

  Default:          252

  Range:            0-2048

  Unit:             1 byte

  Description:      Sets the maximum packet size for transmitting data on
                    the ISDN line.

                          ISDN SPEED - B-CHANNEL

  Type:               Configuration

  Format:             AT [cmds] &En [cmds]

  Description:        Selects the base speed that will be used for ISDN
                      B-channel communications.

      Command                              Function

        &E0           64Kbps base speed.

        &E1           56Kbps base speed.

                          LOCAL SERIAL PORT SPEED

  Type:          Register

  Format:        AT [cmds] S18=n [cmds]

  Description:   Sets serial port speed.

     Value                               Meaning

       0         Serial port speed follows connect speed.

       1         Sets 921.6Kbps speed.

       2         Sets 460.8Kbps speed.

       3         Sets 230.4Kbps speed.

       8         Sets 115.2Kbps speed.

       9         Sets 57.6Kbps speed.

       10        Sets 38.4Kbps speed.

       11        Sets 19.2Kbps speed.

       12        Sets 9600bps speed.

       13        Sets 4800bps speed.

       14        Sets 2400bps speed.

       15        Sets 1200bps speed.

                  LOCAL SERIAL PORT SPEED ON AUTO-ANSWER

  Type:                 Register

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

  Description:          Sets the speed of the local serial port when the
                        modem auto-answers an incoming call.

        Value                                Meaning

          0             Sets 921.6Kbps speed.

          1             Sets 460.8Kbps speed.

          2             Sets 230.4Kbps speed.

          3             Sets 115.2Kbps speed.

          8             Sets 57.6Kbps speed.

          9             Sets 38.4Kbps speed.

          10            Sets 19.2Kbps speed.

          11            Sets 9600bps speed.

          12            Sets 4800bps speed.

          13            Sets 2400bps speed.

          14            Sets 1200bps speed.

                                LOOPBACK 4

  Type:          Configuration

  Format:        AT [cmds] CPn [cmds]

  Description:   Selects the Loopback 4 function.

    Command                              Function

      CP0        Loopback 4 disabled.

      CP1        Loopback 4 enabled.

                           LOOPBACK TEST SIGNALS

  Type:                  Register

  Format:                AT [cmds] S41=n [cmds]

  Description:           Selects whether loopback test signals 140 and
                         141 on the RS-232 interface will be used.

        Command                             Function

         S41=0           Loopback test signals disabled.

         S41=8           Loopback test signals enabled.

                              METERING PULSE

  Format:               AT [cmds] S89=n [cmds]

  Default:              0

  Range:                0 - 96

  Description:          Selects whether the TA will generate metering
                        pulses on either of the analog adapters.

    Bit       Value                         Function

   3 - 0        0000    Not used.

     5              0   Metering pulse disabled on analog adapter 2.

                   1    Metering pulse enabled on analog adapter 2.

     6              0   Metering pulse disabled on analog adapter 1.

                   1    Metering pulse enabled on analog adapter 1.

                          PPP IDLE OUT PREVENTION

  Type:            Register

  Format:          AT [cmds] S124=n [cmds]

  Default:         0

  Range:           0-255

  Unit:            1 second

  Description:     Sends an empty packet to avoid disconnection on PPP
                   connections.

                     PREFIX FOR INTERNATIONAL NUMBERS

  Type:                  Configuration

  Format:                AT [cmds] CIxxxx [cmds]

  Description:           Sets the prefix that the modem will prepend to
                         international numbers when reporting them in
                         result codes.

                     PREFIX FOR LONG-DISTANCE NUMBERS

  Type:                  Configuration

  Format:                AT [cmds] CNxxxx [cmds]

  Description:           Sets the prefix that the modem will prepend to
                         long-distance (but not international) numbers
                         when reporting them in result codes.

                      PROTOCOL/SPEED - ISDN B-CHANNEL

  Type:                 Configuration

  Format:               AT [cmds] Bnn [cmds]

  Description:          Selects the protocol and speed that will be used
                        for ISDN B-channel communications.

       Command                              Function

         B00            Use X.75 transparent.

         B01            Use X.75 with T.70.

         B04            Use X.75 with BTX.

         B10            Use V.110 autospeed.

         B13            Use V.110 at 2400bps.

         B14            Use V.110 at 4800bps.

         B15            Use V.110 at 9600bps.

         B16            Use V.110 at 14.4Kbps.

         B17            Use V.110 at 19.2Kbps.

         B18            Use V.110 at 38.4Kbps.

         B19            Use V.110 at 57.6Kbps.

         B20            Use V.120.

         B40            Use PPP asynchronous to HDLC conversion.

                      PROTOCOL/SPEED - ISDN B-CHANNEL

  Type:                 Register

  Format:               AT [cmds] S82=n [cmds]

  Description:          Selects the protocol and speed that will be used
                        for ISDN B-channel communications.

       Command                              Function

        S82=60          Use V.120 at 64Kbps.

        S82=61          Use V.120 at 56Kbps.

        S82=62          Use X.75 transparent at 64Kbps.

        S82=63          Use X.75 transparent at 56Kbps.

        S82=64          Use X.75 with T.70 at 64Kbps.

        S82=65          Use X.75 with T.70 at 56Kbps.

        S82=70          Use X.75 with BTX at 64Kbps.

        S82=71          Use X.75 with BTX at 56Kbps.

        S82=72          Use V.110 at 64Kbps.

        S82=73          Use V.110 at 56Kbps.

        S82=74          Use PPP asynchronous to HDLC conversion at
                        64Kbps.

        S82=75          Use PPP asynchronous to HDLC conversion at
                        56Kbps.

        S82=76          Use SLIP asynchronous to HDLC conversion at
                        64Kbps.

        S82=77          Use SLIP asynchronous to HDLC conversion at
                        56Kbps.

                 PROTOCOL/SPEED - ISDN B-CHANNEL BUNDLING

  Type:             Register

  Format:           AT [cmds] S100=n [cmds]

  Description:      Selects the protocol that will be used for ISDN
                    B-channel bundling.

     Command                              Function

      S100=0        Use Multiple Link Protocol.

      S100=1        Use cFossil Channel Bundling.

                      PROTOCOL/SPEED - ISDN D-CHANNEL

  Type:                 Configuration

  Format:               AT [cmds] Pn [cmds]

  Description:          Selects the protocol and speed that will be used
                        for ISDN D-channel communications.

       Command                              Function

          P0            Use Northern Telecom.

          P1            Use National ISDN for 1 SPID.

          P2            Use National ISDN for 2 SPIDs.

          P4            Use AT&T point-to-point.

          P5            Use AT&T multipoint for 1 SPID.

          P6            Use AT&T multipoint for 2 SPIDs.

                      PROTOCOL/SPEED - ISDN D-CHANNEL

  Type:                 Configuration

  Format:               AT [cmds] S86=n [cmds]

  Description:          Selects the protocol and speed that will be used
                        for ISDN D-channel communications.

       Command                              Function

        S86=0           Use Northern Telecom.

        S86=1           Use National ISDN for 1 SPID.

        S86=2           Use National ISDN for 2 SPIDs.

        S86=4           Use AT&T point-to-point.

        S86=5           Use AT&T multipoint for 1 SPID.

        S86=6           Use AT&T multipoint for 2 SPIDs.

                      PROTOCOL/SPEED - OUTGOING ISDN

  Type:                Register

  Format:              AT [cmds] S102=n [cmds]

  Description:         Selects the protocol and speed that will be used
                       for outgoing ISDN communications.

       Command                              Function

       S102=60         Use V.120 at 64Kbps.

       S102=61         Use V.120 at 56Kbps.

       S102=62         Use X.75 transparent at 64Kbps.

       S102=63         Use X.75 transparent at 56Kbps.

       S102=64         Use X.75 with T.70 at 64Kbps.

       S102=65         Use X.75 with T.70 at 56Kbps.

       S102=70         Use X.75 with BTX at 64Kbps.

       S102=71         Use X.75 with BTX at 56Kbps.

       S102=72         Use V.110 at 64Kbps.

       S102=73         Use V.110 at 56Kbps.

       S102=74         Use PPP asynchronous to HDLC conversion at 64Kbps.

       S102=75         Use PPP asynchronous to HDLC conversion at 56Kbps.

       S102=76         Use SLIP asynchronous to HDLC conversion at
                       64Kbps.

       S102=77         Use SLIP asynchronous to HDLC conversion at
                       56Kbps.

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information about the TA.

    Command                              Function

       I0         Displays product code.

       I1         Displays product information and ROM checksum.

       I3         Displays firmware revision.

       I6         Displays statistics on current connection.

       I9         Displays Plug-N-Play code.

                               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        Result code sending enabled in originate mode only.

                               RESULT CODES

  Type:                 Configuration

  Format:               AT [cmds] Xn [cmds]

  Description:          Selects which result codes will be displayed.

       Command                              Function

          X0            Standard result codes only are enabled.

          X1            Standard and DCE connection speed result codes
                        are enabled.

          X2            Standard and DCE connection speed result codes
                        and dial tone detection are enabled.

          X3            All result codes except dial tone detection are
                        enabled.

          X4            All result codes are enabled.

          X5            All result codes plus DTE speed and error control
                        level are enabled.

          X6            All result codes plus ARQ are enabled.

          X7            All result codes plus ARQ and error control level
                        are enabled.

                        RESULT CODES - ANSWER MODE

  Type:           Register

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

  Description:    Enables modem to send result codes to the DTE in answer
                  mode.

    Command                              Function

     S40=0        Result code sending in answer mode enabled.

     S40=2        Result code sending in answer mode disabled.

                                RING VOLUME

  Format:         AT [cmds] Nn [cmds]

  Default:        3

  Range:          0 - 3

  Unit:           N/A

  Description:    Sets the volume of the ring sound. N0 disables the ring
                  sound.

                   SERVICE INDICATOR - ANALOG ADAPTER 1

  Type:             Configuration

  Format:           AT [cmds] S107=n [cmds]

  Description:      Sets the 1TR6 Service Indicator for calls made with
                    analog adapter 1.

     Command                              Function

      S107=1        Service Indicator set for voice call.

      S107=2        Service Indicator set for data/fax call.

      S107=7        Service Indicator set for ISDN call.

                   SERVICE INDICATOR - ANALOG ADAPTER 2

  Type:             Configuration

  Format:           AT [cmds] S104=n [cmds]

  Description:      Sets the 1TR6 Service Indicator for calls made with
                    analog adapter 2.

     Command                              Function

      S104=1        Service Indicator set for voice call.

      S104=2        Service Indicator set for data/fax call.

      S104=7        Service Indicator set for ISDN call.

                         SERVICE INDICATOR - ISDN

  Type:          Configuration

  Format:        AT [cmds] S106=n [cmds]

  Description:   Sets the 1TR6 Service Indicator for ISDN calls.

    Command                              Function

     S106=1      Service Indicator set for voice call.

     S106=2      Service Indicator set for data/fax call.

     S106=7      Service Indicator set for ISDN call.

               SERVICE INDICATOR DETAILS - ANALOG ADAPTER 1

  Type:              Configuration

  Format:            AT [cmds] S111=n [cmds]

  Description:       Sets additional details for the 1TR6 Service
                     Indicator for calls made with analog adapter 1.

  Note:              This table should only be used in 1TR6 mode.

      Service           Command                    Function
     Indicator

      S107=1             S111=1       Set SI for 3.1KHz digital voice
                                      call.

                         S111=2       Set SI for analog voice call.

      S107=2             S111=2       Set SI for fax call.

                         S111=3       Set SI for data call.

                         S111=4       Set SI for BTX call.

      S107=7         Bit     Value                 Function

                     1, 0         00  Set SI for X.75 protocol.

                                  01  Set SI for asynchronous V.110
                                      protocol.
                                  10
                                      Set SI for asynchronous V.110
                                 11   protocol.

                                      Set SI for synchronous V.110
                                      protocol.

                                 For V.110 asynchronous mode:

                      2            0  Set SI for 8 data bits.

                                  1   Set SI for 7 data bits.

                      3            0  Set SI for 1 stop bit.

                                  1   Set SI for 2 stop bits.

                      4            0  Set SI for no parity.

                                  1   Set SI for even parity.

                     7-5              Bits 1, 0: 01     Bits 1, 0: 10

                                000   Set speed to      Set speed to
                                      1200bps.          38.4Kbps.

                                 011  Set speed to 2400bps.

                                 100  Set speed to 4800bps.

                                 101  Set speed to 9600bps.

                                 110  Set speed to 14.4Kbps.

                                111   Set speed to 19.2Kbps.

                                 For V.110 synchronous mode:

                     3, 2        01   Not used

                     7-4        0000  Set speed to 1200bps.

                                0011  Set speed to 2400bps.

                                0100  Set speed to 4800bps.

                                1010  Set speed to 9600bps.

                                0110  Set speed to 14.4Kbps.

                                0111  Set speed to 19.2Kbps.

                                1000  Set speed to 48Kbps.

                                1001  Set speed to 56Kbps.

                                1010  Set speed to 56Kbps on 56Kbps line
                                      only.
                               1111
                                      Negotiate highest common speed.

               SERVICE INDICATOR DETAILS - ANALOG ADAPTER 2

  Type:              Configuration

  Format:            AT [cmds] S108=n [cmds]

  Description:       Sets additional details for the 1TR6 Service
                     Indicator for calls made with analog adapter 2.

  Note:              This table should only be used in 1TR6 mode.

      Service           Command                    Function
     Indicator

      S104=1             S108=1       Set SI for 3.1KHz digital voice
                                      call.

                         S108=2       Set SI for analog voice call.

      S104=2             S108=2       Set SI for fax call.

                         S108=3       Set SI for data call.

                         S108=4       Set SI for BTX call.

      S104=7         Bit     Value                 Function

                     1, 0         00  Set SI for X.75 protocol.

                                  01  Set SI for asynchronous V.110
                                      protocol.
                                  10
                                      Set SI for asynchronous V.110
                                 11   protocol.

                                      Set SI for synchronous V.110
                                      protocol.

                                 For V.110 asynchronous mode:

                      2            0  Set SI for 8 data bits.

                                  1   Set SI for 7 data bits.

                      3            0  Set SI for 1 stop bit.

                                  1   Set SI for 2 stop bits.

                      4            0  Set SI for no parity.

                                  1   Set SI for even parity.

                     7-5              Bits 1, 0: 01     Bits 1, 0: 10

                                000   Set speed to      Set speed to
                                      1200bps.          38.4Kbps.

                                 011  Set speed to 2400bps.

                                 100  Set speed to 4800bps.

                                 101  Set speed to 9600bps.

                                 110  Set speed to 14.4Kbps.

                                111   Set speed to 19.2Kbps.

                                 For V.110 synchronous mode:

                     3, 2        01   Not used

                     7-4        0000  Set speed to 1200bps.

                                0011  Set speed to 2400bps.

                                0100  Set speed to 4800bps.

                                1010  Set speed to 9600bps.

                                0110  Set speed to 14.4Kbps.

                                0111  Set speed to 19.2Kbps.

                                1000  Set speed to 48Kbps.

                                1001  Set speed to 56Kbps.

                                1010  Set speed to 56Kbps on 56Kbps line
                                      only.
                               1111
                                      Negotiate highest common speed.

                 SERVICE INDICATOR DETAILS - ISDN ADAPTER

  Type:              Configuration

  Format:            AT [cmds] S110=n [cmds]

  Description:       Sets additional details for the 1TR6 Service
                     Indicator for calls made with the ISDN interface.

  Note:              This table should only be used in 1TR6 mode.

      Service           Command                    Function
     Indicator

      S106=1             S110=1       Set SI for 3.1KHz digital voice
                                      call.

                         S110=2       Set SI for analog voice call.

      S106=2             S110=2       Set SI for fax call.

                         S110=3       Set SI for data call.

                         S110=4       Set SI for BTX call.

      S106=7         Bit     Value                 Function

                     1, 0         00  Set SI for X.75 protocol.

                                  01  Set SI for asynchronous V.110
                                      protocol.
                                  10
                                      Set SI for asynchronous V.110
                                 11   protocol.

                                      Set SI for synchronous V.110
                                      protocol.

                                 For V.110 asynchronous mode:

                      2            0  Set SI for 8 data bits.

                                  1   Set SI for 7 data bits.

                      3            0  Set SI for 1 stop bit.

                                  1   Set SI for 2 stop bits.

                      4            0  Set SI for no parity.

                                  1   Set SI for even parity.

                     7-5              Bits 1, 0: 01     Bits 1, 0: 10

                                000   Set speed to      Set speed to
                                      1200bps.          38.4Kbps.

                                 011  Set speed to 2400bps.

                                 100  Set speed to 4800bps.

                                 101  Set speed to 9600bps.

                                 110  Set speed to 14.4Kbps.

                                111   Set speed to 19.2Kbps.

                                 For V.110 synchronous mode:

                     3, 2        01   Not used

                     7-4        0000  Set speed to 1200bps.

                                0011  Set speed to 2400bps.

                                0100  Set speed to 4800bps.

                                1010  Set speed to 9600bps.

                                0110  Set speed to 14.4Kbps.

                                0111  Set speed to 19.2Kbps.

                                1000  Set speed to 48Kbps.

                                1001  Set speed to 56Kbps.

                                1010  Set speed to 56Kbps on 56Kbps line
                                      only.
                               1111
                                      Negotiate highest common speed.

                         SERVICE PROFILE ID NUMBER

  Type:          Configuration

  Format:        AT [cmds] SPIDn=aaaa [cmds]

  Description:   Sets service profile ID number n to aaaa.

                                SOFT RESET

  Type:                Immediate

  Format:              AT [cmds] Zn [cmds]

  Description:         Restores modem profiles previously saved in
                       non-volatile RAM using the &W command.

       Command                              Function

          Z0           Restore profile 0.

          Z1           Restore profile 1.

          Z2           Restore profile 2.

          Z3           Restore profile 3.

          Z4           Restore factory defaults and use them as power-on
                       defaults.

                            STATUS REGISTER BIT

  Type:          Configuration

  Format:        Read: AT [cmds] Sn.m=0 or 1 [cmds]

                 Write: AT [cmds] Sn.m=? [cmds]

  Example:       AT S40.4=1 S51.3?<CR>

  Description:   Sets/clears or reads bit m of register n.

                                TEST MODES

  Type:          Immediate

  Format:        AT [cmds] &Tn

  Description:   Performs test modes.

    Command                              Function

      &T0        End current test.

      &T9        Begin ISDN loopback.

      &T10       Begin ISDN loopback and self-test.

                          TEST MODES IN PROGRESS

  Type:          Register

  Format:        AT [cmds] S16? [cmds]

  Description:   Returns a value indicating any test modes in progress.

     Value                               Meaning

       0         No test in progress.

       1         Loopback test in progress.

       9         ISDN loopback test in progress.

       10        ISDN loopback test and self-test in progress.

                             TRANSMIT MESSAGE

  Type:                  Immediate

  Format:                AT [cmds] Tnxxxx [cmds]

  Description:           Sends a text message xxxx to the remote modem
                         with the specified protocol. If no parameters
                         are specified, the last message will be
                         retransmitted.

        Command                              Function

          T0             Send in user-defined protocol.

          T1             Send in OSI high-layer protocol.

          T2             Send in X.244.

          T3             Used for system management.

          T4             Send in IA5 format.

          T7             Send in ITU-T V.120 protocol.

          T8             Send in Q.931 call control protocol.

                                V.110 SPEED

  Type:           Configuration

  Format:         AT [cmds] S117=n [cmds]

  Description:    Selects the speed that will be used for V.110
                  communications.

    Command                              Function

     S117=0       V.110 autospeed.

     S117=3       V.110 at 2400bps.

     S117=4       V.110 at 4800bps.

     S117=5       V.110 at 9600bps.

     S117=6       V.110 at 14.4Kbps.

     S117=7       V.110 at 19.2Kbps.

     S117=8       V.110 at 38.4Kbps.

     S117=9       V.110 at 57.6Kbps.

