FRANKLIN TELECOMMUNICATIONS CORPORATION

ICC-4

Card Type      Serial multiplexer, telephony
Chipset        Unidentified
I/O Options    Serial ports (4), FABB bus
Data Bus       8-bit ISA
Card Size      Full height, three-quarters length

[Image]

                                CONNECTIONS

          Function             Label           Function            Label

  Serial ports via DB-37        CN1     Franklin Above Board        CN3
  connector                             Bus

  Franklin Above Board Bus      CN2

            Note:Standard DB-25 serial ports are provided on an included
            adapter cable.

                  FABB BUS SELECTION

  Setting    JP5/A      JP5/B      JP5/C      JP5/D

     0       Closed      Open      Open       Open

     1        Open      Closed     Open       Open

     2        Open       Open     Closed      Open

     3        Open       Open      Open      Closed

                            FABB BUS SELECTION

    Setting         JP6/A          JP6/B         JP6/C          JP6/D

       0            Closed         Open           Open           Open

       1             Open         Closed          Open           Open

       2             Open          Open          Closed          Open

       3             Open          Open           Open          Closed

            Note:JP5 and JP6 select receive bus and transmit bus. It is
            not known which jumper block selects which, although they are
            generally set to the same bus.

                          FABB CHANNEL SELECTION

   Setting       JP1/A       JP1/B       JP1/C       JP1/D        JP1/E

      0         Closed      Closed       Closed      Closed      Closed

      1         Closed      Closed       Closed       Open       Closed

      2         Closed      Closed       Closed      Closed       Open

      3         Closed      Closed       Closed       Open        Open

      4         Closed      Closed        Open       Closed      Closed

     27          Open        Open        Closed       Open        Open

     28          Open        Open         Open       Closed      Closed

     29          Open        Open         Open        Open       Closed

     30          Open        Open         Open       Closed       Open

     31          Open        Open         Open        Open        Open

            Note:A total of 32 channel settings are available. The
            jumpers are a binary representation of the decimal addresses.
            JP1/A is the Most Significant Bit and jumper JP1/E is the
            Least Significant Bit. The jumpers have the following decimal
            values: JP1/E=1, JP1/D=2, JP1/C=4, JP1/B=8, JP1/A=16, . Open
            the jumpers and add the values of the jumpers that are open
            to obtain the correct channel. (Open=1, Closed=0)

            The settings for JP2 through JP4 are identical to those for
            JP1. JP1 sets the FABB channel for serial port 1, and JP2
            through JP4 set the FABB channel for serial ports 2 through
            4, respectively.