Dialogic D/21D 产品宣传页

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05-0294-003 

 

 

Copyright © 1997  

Dialogic Corporation.  

All Rights Reserved. 

 

 

To reduce the risk of electric shock: 

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Switch off the power and remove power cords  
before opening the computer case to install the 
D/41D or D/21D. 

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Do not re-attach power cords and switch on power 
to the computer while the computer case is removed. 

Computer boards are static-sensitive and can be damaged 
by touching or handling them. To prevent damage from 
static electricity, do the following: 

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Wear a grounded, static-dissipative wrist-strap for 
the entire hardware installation. 

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Keep the board in its anti-static container when it is 
not being handled. 

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Work at a static-safe work area (see Figure 1). 
 

 

 

 

A static-safe work area consists of a grounded static-
dissipative wrist strap and a work surface covered with 
or composed of a grounded static-dissipative material. 
The work surface drains electrical charges from conduc-
tive materials when the materials are placed on the sur-
face. The grounded static-dissipative wrist strap drains 
stat ic charge from the person wearing the strap. Both 
components ensure that static charges are drained at a 
rate and current level that are safe. Both must be used 
any time a person is handling any component.  

Your application software or Dialogic software release 
(hereinafter collectively called “voice software”) may 
have special installation or configuration instructions or 
requirements. Be sure to read all software documentation 
for any such instructions or requirements.  

You can install the D/41D or D/21D and voice software 
in any order, but Dialogic recommends that you install 
the voice software first when running in a Windows



 95 

or Windows NT



 environment, and board first in any 

other operating system environment. 

You may be able to use the factory defaults when install-
ing the D/41D or D/21D board. Read through these 
instructions and check for possible interrupt level (IRQ) 
and memory address conflicts between the D/41D or 
D/21D board and other software or hardware devices 
(for example, video card or CD ROM controller card) 
before installing the board.  

Note:  If you own a software utility that can determine 
what IRQs and memory addresses are in use, run it to 
help determine potential conflicts before installing the  
D/41D or D/21D. Some voice software includes such a 
software utility, or a separate board configuration utility, 
to help with the D/41D or D/21D installation and 
configuration. 

 

You can install up to 16 D/41D or D/21D boards in a 
system. One and only one board in a system can have 
the jumper on JP7 installed (see D/41D Physical 
Description): 

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One board: Leave the jumper on JP7 installed 
(default). 

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Multiple boards: Remove the jumper on JP7 from  
all but one board. 

 

1 2 3 4

S

W

 1

:1

S

W

 1

:2

S

W

 1

:3

S

W

 1

:4

 

 

JP

6

JP

5

   

IRQ 3IRQ 4 IRQ 5 IRQ 6 IRQ 7

IRQ 2/9

 

Figure 2. Top edge view of SW1, and JP6/5 and Side 
view of Jumper Block JP1 

The default hardware interrupt level (IRQ) is IRQ 2/9; 
IRQ 2 is used when the board is installed in an XT-type 
PC and IRQ 9 is used with an AT-type PC.  

Change the IRQ by moving the jumper on jumper block 
JP1 (see Figure 2) to another IRQ setting if IRQ 2 or 9 is 
in use by another device. 

Note:  Set every D/41D and D/21D board in the system 
to the same IRQ level. 

Each D/41D or D/21D and compatible voice board 
installed in a computer must have a unique memory 
address consisting of a base memory address segment 
and an offset address.  

The default base memory address segment for the D/41D 
and D/21D is D000H (Hexadecimal). Generally, you 
should use the default unless there are more than eight 
boards in your system or if other non-Dialogic devices in 
your system must use the D000H segment. Select the 
base address memory segment with jumpers JP5 and JP6 
(see Figure 2) as follows: 

 

 

Base Address 
(Hex) 

JP6 

JP5 

D000 
(default) 

 

removed 

removed 

A000 

†

 

 

removed 

installed 

B000 

†

 

 

installed 

installed 

C000 

‡

 

 

installed 

removed 

 

 

* Be aware of possible conflicts with devices that often 

use  
 

  these segments: † video adapters;  ‡ disk controller 

BIOS. 

The default offset address for the D/41D and D/21D is 
0000H. Each D/41D and D/21D board in your system 
requires a unique address, so you must change the offset 
address on every additional D/41D and D/21D board. If 
you need to change an offset address, set the switches 1, 
2, and 3 on SW1 (see Figure 2) as follows: 

 

 

0000  
(default) 

1 2 3 4

 

off 

off 

off 

2000 

1 2 3 4

 

off 

off 

on 

4000 

1 2 3 4

 

off 

on 

off 

6000 

1 2 3 4

 

off 

on 

on 

8000 

1 2 3 4

 

on 

off 

off 

A000 

1 2 3 4

 

on 

off 

on 

C000 

1 2 3 4

 

on 

on 

off 

E000 

1 2 3 4

 

on 

on 

on 

 

 

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While you can map only one D/41D or D/21D 
board to an offset, you can set multiple boards to 
consecutive offsets within a base memory 
segment as shown in the following example.  

 

Board  Base:Offset (Hex)  D/41D Lines 

1 
2 
3 

D000:0000 
D000:2000 
D000:4000 

1–4   
5–8   

 

9–12 

 

 

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Write the IRQ level and memory address settings 
below for use when installing system software: 

 

 

 

 

 

 

 

 

* Note: The D/21D board does not have jumpers JP301 and JP401.

 

JP101– 
JP401* 

Function   

RJ-14 Connectors for interface 
with PBX or CO lines 

Jumper block to set interrupt 
level 

Jumper to set base memory  
segment 

Jumper to enable hardware 
interrupt circuitry 

Jumper to select the built -in loop 
start interface or an external 
interface (DTI/124 T -1 card) 

Jumpers to set ring detection 
threshold 

Connector for Analog Expansion  
Bus (AEB) 

Switch to set the offset address 
and default line state