
3COM CORPORATION

3COMIMPACT IQ (3C882)

Card Type                    ISDN TA
Chipset                      Unidentified
Error Correction/Compression STAC
ISDN Transfer Rate           56Kbps x 2/64Kbps x 2
ISDN Protocol                V.120, PPP
Switch Type                  5ESS, DMS100, EWSD, NI-1
Data Bus                     Serial

[Image]

                                CONNECTIONS

           Function             Label           Function            Label

  ISDN U interface              CN1     Analog adapter 2            CN4

  Serial port                   CN2     9V DC power in              CN5

  Analog adapter 1              CN3     Reset switch                SW1

                             DIAGNOSTIC LED(S)

    LED         Color          Status                 Condition

    PWR         Green            On                  Power is on

    PWR         Green           Off                 Power is off

    TEST        Green            On              TA failed last test

    TEST        Green         Blinking          TA is executing test

    TEST        Green           Off           TA is not executing test

     D          Green            On         Signal is not synchronized or
                                                ISDN is not connected

     D          Green         Blinking        Signal is synchronized but
                                               D-channel protocols not
                                                     established

     D          Green           Off            Signal is synchronized

     B1         Green            On           Data call connected on B1
                                                       channel

     B1         Amber            On           Voice call connected on B1
                                                       channel

     B1         Green         Blinking      TA is dialing data call on B1
                                                       channel

     B1         Amber         Blinking       TA is dialing voice call on
                                                     B1 channel

     B1          N/A            Off          B1 channel is not connected

                         DIAGNOSTIC LED(S) (CONT)

    LED         Color         Status                 Condition

     B2         Green           On           Data call connected on B2
                                                      channel

     B2         Amber           On           Voice call connected on B2
                                                      channel

     B2         Green        Blinking      TA is dialing data call on B2
                                                      channel

     B2         Amber        Blinking      TA is dialing voice call on B2
                                                      channel

     B2          N/A            Off         B2 channel is not connected

     SD         Green           On            TA is transmitting data

     SD         Green           Off         TA is not transmitting data

     RD         Green           On             TA is receiving data

     RD         Green           Off          TA is not receiving data

     TR         Green           On              DTR signal is high

     TR         Green           Off              DTR signal is low

                  SUPPORTED STANDARD COMMANDS

                       Basic AT Commands

  +++

  A, E, H, O, Q, V, W, Z

  &C, &D, &F, &W

                     Extended AT Commands

  \Q, \T

                          S-Registers

  S0

            Note:See MHI help file for complete information.

Proprietary AT Command Set

                        ANALOG ADAPTER CALL ROUTING

  Format:               AT [cmds] S63= n [cmds]

      Default:          15

      Range:            0 - 15

      Description:      Selects which analog
                        adapters may answer
                        which calls.

            Bit                  Value                   Function

             0                                0   Calls to analog adapter
                                                  1 may not be answered
                                              1   by analog adapter 1.

                                                  Calls to analog adapter
                                                  1 may be answered by
                                                  analog adapter 1.

             1                                0   Calls to analog adapter
                                                  1 may not be answered
                                              1   by analog adapter 2.

                                                  Calls to analog adapter
                                                  1 may be answered by
                                                  analog adapter 2.

             2                                0   Calls to analog adapter
                                                  2 may not be answered
                                              1   by analog adapter 1.

                                                  Calls to analog adapter
                                                  2 may be answered by
                                                  analog adapter 1.

             3                                0   Calls to analog adapter
                                                  2 may not be answered
                                              1   by analog adapter 2.

                                                  Calls to analog adapter
                                                  2 may be answered by
                                                  analog adapter 2.

                               ANSWER DELAY

  Type:                       Register

      Format:                 AT [cmds] S75= n [cmds]

      Description:            Selects whether the TA waits to answer an
                              incoming call.

             Command                           Function

             S75=0           TA does not wait to answer an incoming
                              call.

              S75=1           TA waits two seconds to answer an incoming
                              call.

                                 CALL TYPE

  Type:                      Register

      Format:                AT [cmds] S61= n [cmds]

      Description:           Selects whether the TA will force a
                             particular call type.

             Command                           Function

             S61=0          D command dials in standard mode and DD
                             command dials in 56Kbps permissive mode.

              S61=1          Both commands dial in 56Kbps permissive
                             mode.

              S61=2          Both commands dial in standard mode.

                       CALLER ID - ANALOG ADAPTER 1

  Type:          Register (read-only)

  Format:        AT [cmds] S65? [cmds]

  Description:   Displays the Caller ID information for analog adapter 1.

                       CALLER ID - ANALOG ADAPTER 2

  Type:          Register (read-only)

  Format:        AT [cmds] S66? [cmds]

  Description:   Displays the Caller ID information for analog adapter 1.

                             CALLER ID - ISDN

  Type:          Register (read-only)

  Format:        AT [cmds] S67? [cmds]

  Description:   Displays the Caller ID information for the ISDN line.

                CHALLENGE HANDSHAKE AUTHENTICATION PROTOCOL

  Type:                      Register

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

      Description:           Selects whether the TA will attempt to use
                             CHAP.

            Command                            Function

             S84=0           CHAP negotiation enabled.

            S84=1           CHAP negotiation disabled.

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %C n [cmds]

  Description:   Selects whether the TA will use data compression.

    Command                              Function

      %C0        Data compression disabled.

      %C2        Data compression enabled.

                              DIAL - STANDARD

  Type:           Immediate

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

  Description:    Dials the number indicated to make a standard ISDN
                  connection.

                             DIAL - PERMISSIVE

  Type:            Immediate

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

  Description:     Dials the number indicated to make a 56Kbps permissive
                   connection.

                   DISPLAY CONFIGURATION AND STATISTICS

  Type:                Immediate

  Format:              AT [cmds] \S [cmds]

  Description:         Displays the settings of all commands and
                       statistics about the current connection.

                         DISPLAY FIRMWARE VERSION

  Type:          Immediate

  Format:        AT [cmds] %V [cmds]

  Description:   Displays the current firmware version.

                            DISPLAY INFORMATION

  Type:          Immediate

  Format:        AT [cmds] I n [cmds]

  Description:   Displays information requested about the TA.

    Command                              Function

       I0        Displays model number.

       I1        Displays ROM checksum.

       I2        Tests and reports ROM checksum.

       I3        Displays model and version.

                             DISPLAY REGISTERS

  Type:          Immediate

  Format:        AT [cmds] %R n [cmds]

  Description:   Displays the settings of all status registers.

                           DISPLAY SERIAL NUMBER

  Type:          Immediate

  Format:        AT [cmds] %S n [cmds]

  Description:   Displays the serial number of the TA.

                       DYNAMIC BANDWIDTH ALLOCATION

  Type:                      Register

      Format:                AT [cmds] S70= n [cmds]

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

            Command                            Function

             S70=0           Dynamic bandwidth allocation disabled.

            S70=1           Dynamic bandwidth allocation enabled.

                          ENDPOINT DISCRIMINATOR

  Type:                  Register

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

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

                       ENDPOINT DISCRIMINATOR CLASS

  Type:                      Configuration

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

      Description:           Sets the endpoint discriminator class for
                             multipoint PPP systems.

            Command                            Function

             S82=1           User-defined address.

             S82=2           IP address.

             S82=3           802.1 MAC address.

             S82=4           PPP magic number block.

            S82=5           Public Switched Network Directory number.

                          LOCAL SERIAL PORT SPEED

  Type:                      Configuration

      Format:                AT [cmds] $B n [cmds]

      Description:           Sets the speed that the TA will communicate
                             with the DTE.

            Command                            Function

             $B0            Auto-detects current serial port speed.

             $B1200          Sets the serial port to 1200bps.

             $B2400          Sets the serial port to 2400bps.

             $B4800          Sets the serial port to 4800bps.

             $B9600          Sets the serial port to 9600bps.

            $B19200          Sets the serial port to 19.2Kbps.

            $B38400          Sets the serial port to 38.4Kbps.

            $B57600          Sets the serial port to 57.6Kbps.

            $B115200         Sets the serial port to 115.2Kbps.

            $B230400         Sets the serial port to 230.4Kbps.

                                LINE SPEED

  Type:                       Register

      Format:                 AT [cmds] S60= n [cmds]

      Description:            Selects the line speed that the TA will
                              attempt to connect at.

             Command                           Function

            S60=56           TA will attempt to connect at 56Kbps.

             S60=64           TA will attempt to connect at 64Kbps.

                               MULTILINK PPP

  Type:                       Register

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

      Description:            Selects whether the TA will use Multilink
                              PPP.

             Command                           Function

              S80=0           Multilink PPP disabled.

             S80=1           Multilink PPP enabled.

                              PHONE NUMBER 1

  Type:          Register

  Format:        AT [cmds] S51= <#> [cmds]

  Description:   Sets the TAs first phone number.

                              PHONE NUMBER 2

  Type:          Register

  Format:        AT [cmds] S53= <#> [cmds]

  Description:   Sets the TAs first phone number.

                           PROTOCOL - B-CHANNEL

  Type:                      Register

      Format:                AT [cmds] S71= n [cmds]

      Description:           Selects the protocol the TA will use on the
                             B channels.

            Command                            Function

            S71=0           Auto-select common protocol.

             S71=1           TA will use PPP conversion.

             S71=2           TA will use V.120

                       SERVICE PROFILE IDENTIFIER 1

  Type:          Register

  Format:        AT [cmds] S52= <#> [cmds]

  Description:   Sets the TAs first SPID.

                       SERVICE PROFILE IDENTIFIER 2

  Type:          Register

  Format:        AT [cmds] S54= <#> [cmds]

  Description:   Sets the TAs second SPID.

                                SWITCH TYPE

  Type:                      Register

      Format:                AT [cmds] S50= n [cmds]

      Description:           Selects the type of IDSN switch the TA is
                             connected to.

            Command                            Function

              0             Unknown switch type

               1             AT&T 5ESS custom switch type.

               3             NI-1/AT&T 5ESS switch type.

               6             NI-1/National Telecom NI-1 or Siemens EWSD
                             switch type.

                      TERMINAL ENDPOINT IDENTIFIER 1

  Type:                  Register (read-only)

  Format:                AT [cmds] S55? [cmds]

  Description:           Displays the first TEI assigned by the ISDN
                         switch. A value of 255 indicated that the switch
                         did not assign a TEI.

                   TERMINAL ENDPOINT IDENTIFIER 1 STATUS

  Type:          Register (read-only)

  Format:        AT [cmds] S57? [cmds]

  Description:   Returns a value indicating the status of the first TEI.

     Value                               Meaning

       0         TA has not attempted to initialize with SPID 1.

       1         TA succeeded in initializing with SPID 1.

       2         TA failed in initializing with SPID 1.

                      TERMINAL ENDPOINT IDENTIFIER 2

  Type:                  Register (read-only)

  Format:                AT [cmds] S56? [cmds]

  Description:           Displays the second TEI assigned by the ISDN
                         switch. A value of 255 indicated that the switch
                         did not assign a TEI.

                   TERMINAL ENDPOINT IDENTIFIER 2 STATUS

  Type:          Register (read-only)

  Format:        AT [cmds] S58? [cmds]

  Description:   Returns a value indicating the status of the second TEI.

     Value                               Meaning

       0         TA has not attempted to initialize with SPID 2.

       1         TA succeeded in initializing with SPID 2.

       2         TA failed in initializing with SPID 2.

                            U INTERFACE STATUS

  Type:          Register (read-only)

  Format:        AT [cmds] S59? [cmds]

  Description:   Returns a value indicating the status of the U
                 interface.

    Command                              Function

       0         U interface is not synchronized.

       1         U interface is synchronized.

                             V.120 FRAME TYPE

  Type:                       Register

      Format:                 AT [cmds] S73= n [cmds]

      Description:            Selects the frame type that the TA will use
                              when in V.120 mode.

             Command                           Function

             S73=0           TA will use I frames.

              S73=1           TA will use UI frames.

                         V.120 MAXIMUM FRAME SIZE

  Type:          Register

  Format:        AT [cmds] S74= n [cmds]

  Default:       256

  Range:         240 - 256

  Unit:          1 byte

  Description:   Selects the maximum frame size used for V.120 mode.

  Note:

  Adtran ISDN uses a maximum frame size of 253 bytes.

