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       # 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                                   
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        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.                             |
          +------------------------------------------------------------+