DIALOGIC CORPORATION
====================

   D/21D (REV. 3)

   Card Type         Telephony                                    
   I/O Options       AEB bus, Line in via RJ-14 (2)               
   Data Bus          8-bit ISA                                    
   Line Type         Loop-start                                   

<gopher://bitreich.org/I/th99/t/C-D/54374-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Label |        Function        | Label |
   |-------------------+-------+------------------------+-------|
   | Line in           |  J1   | Analog expansion bus   |  P3   |
   |-------------------+-------+------------------------+-------|
   | Line in           |  J2   |                        |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                 Setting                 | Label | Position |
   |-----------------------------------------+-------+----------|
   |>> | IRQ termination enabled             |  JP7  |   Open   |
   |---+-------------------------------------+-------+----------|
   |   | IRQ termination disabled            |  JP7  |  Closed  |
   |---+-------------------------------------+-------+----------|
   |>> | Board will use internal loop-start  |  JP8  |  Closed  |
   |   | interface for input                 |       |          |
   |---+-------------------------------------+-------+----------|
   |   | Board will use T1 interface via AEB |  JP8  |   Open   |
   |   | bus for input                       |       |          |
   |---+-------------------------------------+-------+----------|
   |>> | Disabled board will not answer      | SW1/4 |   Off    |
   |   | incoming calls                      |       |          |
   |---+-------------------------------------+-------+----------|
   |   | Disabled board will send busy       | SW1/4 |    On    |
   |   | signal to incoming calls            |       |          |
   |------------------------------------------------------------|
   |      Note:If multiple D/4x cards are installed in a        |
   |      system, JP7 should be closed for only one of them.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CHANNEL 1 RING DETECTION                  |
   |------------------------------------------------------------|
   |                 Setting                  |      JP101      |
   |------------------------------------------+-----------------|
   |     Ring detection threshold normal      |      Open       |
   |------------------------------------------+-----------------|
   |     Ring detection threshold lowered     |     Closed      |
   |------------------------------------------------------------|
   | Note: A lowered threshold may cause false detection of     |
   | rings                                                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CHANNEL 2 RING DETECTION                  |
   |------------------------------------------------------------|
   |                 Setting                  |      JP201      |
   |------------------------------------------+-----------------|
   |     Ring detection threshold normal      |      Open       |
   |------------------------------------------+-----------------|
   |     Ring detection threshold lowered     |     Closed      |
   |------------------------------------------------------------|
   | Note: A lowered threshold may cause false detection of     |
   | rings                                                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      BASE I/O ADDRESS                      |
   |------------------------------------------------------------|
   |    Setting    |   JP5   |  JP6  | SW1/1  | SW1/2  | SW1/3  |
   |---------------+---------+-------+--------+--------+--------|
   |    |  A0000h  | Closed  | Open  |  Off   |  Off   |  Off   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  A2000h  | Closed  | Open  |  Off   |  Off   |   On   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  A4000h  | Closed  | Open  |  Off   |   On   |  Off   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  A6000h  | Closed  | Open  |  Off   |   On   |   On   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  A8000h  | Closed  | Open  |   On   |  Off   |  Off   |
   |----+----------+---------+-------+--------+--------+--------|
   |>>  |  D0000h  |  Open   | Open  |  Off   |  Off   |  Off   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  D6000h  |  Open   | Open  |  Off   |   On   |   On   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  D8000h  |  Open   | Open  |   On   |  Off   |  Off   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  DA000h  |  Open   | Open  |   On   |  Off   |   On   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  DC000h  |  Open   | Open  |   On   |   On   |  Off   |
   |----+----------+---------+-------+--------+--------+--------|
   |    |  DE000h  |  Open   | Open  |   On   |   On   |   On   |
   |------------------------------------------------------------|
   |                           Note:                            |
   |                                                            |
   | A total of 32 base address settings are available. The     |
   | switches are a binary representation of the decimal memory |
   | addresses. JP5 is the Most Significant Bit and switch      |
   | SW1/3 is the Least Significant Bit. The switches have the  |
   | following decimal values: JP5=131072 JP6=65536,            |
   | SW1/1=32768, SW1/2=16384, SW1/3=8192. Turn off the         |
   | switches and add the values of the switches to obtain the  |
   | correct memory address. (Off=1, On=0)                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         INTERRUPT                          |
   |------------------------------------------------------------|
   | Setting  |  JP1/A  | JP1/B | JP1/C | JP1/D | JP1/E | JP1/F |
   |----------+---------+-------+-------+-------+-------+-------|
   |>>  |      | Closed  | Open  | Open  | Open  | Open  | Open  |
   |---+------+---------+-------+-------+-------+-------+-------|
   |   | IRQ3 |  Open   |Closed | Open  | Open  | Open  | Open  |
   |---+------+---------+-------+-------+-------+-------+-------|
   |   | IRQ4 |  Open   | Open  |Closed | Open  | Open  | Open  |
   |---+------+---------+-------+-------+-------+-------+-------|
   |   | IRQ5 |  Open   | Open  | Open  |Closed | Open  | Open  |
   |---+------+---------+-------+-------+-------+-------+-------|
   |   | IRQ6 |  Open   | Open  | Open  | Open  |Closed | Open  |
   |---+------+---------+-------+-------+-------+-------+-------|
   |   | IRQ7 |  Open   | Open  | Open  | Open  | Open  |Closed |
   |------------------------------------------------------------|
   |     Note: All D/21D & D/41D boards in the system should be |
   |     set to the same interrupt.                             |
   +------------------------------------------------------------+