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Installing the Dialogic® 

Brooktrout® TruFax® BRI 

PCI Board

Part Number: 931-107-05

The Dialogic® Brooktrout® TruFax® BRI 
(Basic Rate Interface ISDN) PCI boards are half-
sized, single-slot PCI-bus compatible fax processing 
boards. They provide the following:

Š

On-board BRI connections

Š

Up to four V.17 fax channels per board

The TruFax® BRI PCI Series boards can be used in 
either 3.3V or 5V bus (signaling) slots.

You need a fax application to use a TruFax® BRI 
board. Dialogic does not provide the application or a 
driver for this board. A driver comes with the 
application that you purchase.

This installation guide provides information about:

Š

System Requirements (including telephone 
service)

Š

Setting the Module Number

Š

Setting Termination Jumpers for the BRI Line

Š

Installing the Dialogic® Brooktrout® Board

Š

Recognizing PCI Slots

Š

Connecting the Phone Service

Š

Understanding LED Signals

Š

Using the Dialogic® Brooktrout® TruFax® BRI 
Board

Š

Getting Help

System Requirements

This board must be installed in an enclosure that 
meets the following specifications:

Š

A Pentium or later host processor

Š

A PCI bus slot that runs at least 33 MHz and is 
32 or 64 bits wide. See 

Recognizing PCI Slots

 for 

more information.

Š

Temperature: 0 C - 50 C

Š

Humidity: 10% - 95% (non-condensing)

Š

Power Requirements:

The following is also required:

Š

Telephone service: BRI interface

Setting the Module Number

Set each board to a unique module number to easily 
identify the resources associated with a specific board 
in a multi-board system.

Use the SW-1 rotary switch (Figure 1) to set a unique 
module number for each Dialogic® Brooktrout® 
board. See Figure 5 for the switch location. Select a 
number from 2 - F on the rotary switch. Settings 0 and 
1 are reserved and cannot be used. 

Figure 1. Rotary Switch (SW-1)

Setting Termination Jumpers 
for the BRI Line

Before installing your board, set termination for the 
BRI line if necessary. See Figure 5 for the location of 
the termination switches. 

Set jumpers as follows (See Figure 2 for details):

Figure 2. Termination Jumpers

Š

When the jumpers are removed from both 
switches for the appropriate port, there is no 
termination.

Š

When jumpers are present, the lines are 
terminated with 100

 

ohms (this is how the boards 

are shipped)

.

Š

Dialogic does not support any configuration 
except the two illustrated in Figure 2.

Installing the Dialogic® 

Brooktrout® Board

To install your board:
1.

Turn off your PC and remove the cover.

2.

If the system has a PCI expansion hold-down bar, 
remove it.

3.

Locate a free PCI bus slot and remove the slot 
cover.

4.

Carefully align the board with the slot and firmly 
seat the board into the slot.

5.

Tighten the mounting bracket screw to secure the 
board to the chassis.

6.

Replace the cover.

7.

Turn on your computer.

Note: 

Dialogic® Brooktrout® boards should not be present in the 

computer during the installation of any operating system. 

The operating system might misinterpret the board as being 

some other device, with unpredictable consequences.

Recognizing PCI Slots

The PCI connectors in the computer chassis usually 
appear as white slots. The TruFax® BRI board has a 
PCI board edge connector. It can be inserted into any 
of the PCI slots shown in Figure 3

Figure 3. PCI Slots

Connecting the Phone Service

The appropriate telephone service and hookups must 
be installed at your site in order to connect to 
telephone service. The following table shows the 
channel/port relationship: 

 

Use the cable supplied with the board. Use these 
instructions to connect your board to BRI service:
1.

Plug one end of the cable into the telephone 
connector on the board.
Connect to Port A for channels 0 and 1 or to 
Port B for channels 2 and 3 (see Figure 5 to 
locate ports).

2.

Plug the other end into the wall connector for 
your BRI service.

Note: 

Port B is not present on the TruFax® BRI single port 

version.

Board

+5 V  +3.3 V +12 V -12 V Total Power

Single channel

0.8A 0A

0A

0A

4.0 W

Dual channel

0.9A 0A

0A

0A

4.5 W

Caution: A small amount of static electricity can destroy 

the sensitive components on your board. To prevent 

static damage, always connect yourself to ground using 

a ground strap before touching a circuit board. Handle 

boards only by the edges or metal mounting brackets 

and transport boards in an anti-static bag.

Warning: When installing the board, be sure that the 

mounting bracket is securely fastened to the chassis and 

the chassis is plugged into a grounded three prong plug. 

Improper chassis or bracket grounding can result in 

harmful or fatal electrical shock as well as component 

damage.

Jumper is in place
(ISDN BRI line is terminated)

Jumper is removed
(ISDN BRI line is not terminated)

Channel Number

RJ-45 Port

Type of Service

0
1
2
3

A
A
B
B

BRI S/T
BRI S/T
BRI S/T
BRI S/T

5V 64-Bit Connector

3.3V 32-Bit Connector

Insert the connector into any of these slots.

3.3V 64-Bit Connector

5V 32-Bit Connector

Universal PCI Board Edge Connector

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