User's Manual
4. Insert the board's edge connector into the bus 
slot. Apply pressure only to the top edge of the 
board, and gently rock the board forward and 
backward to seat the edge connector into the 
slot.
5. Install the retaining screw.
6. If installing multiple boards, select a new slot and 
repeat steps 3 through 5 for each board you are 
installing. 
Connecting the CT Bus Cable
For the D/120JCT-LSU board to interoperate with 
other telecom boards in the system, the boards 
must be interconnected using a cable. The D/
120JCT-LSU board has an H.100 CT Bus connector, 
which may be directly connected to other CT Bus 
boards with an appropriate CT Bus cable. The D/
120JCT-LSU board can also interconnect with 
SCbus boards by means of a CT Bus to SCbus 
adaptor. 
A CT Bus cable is not included with the D/120JCT-
LSU board. You must order an appropriate cable as 
an accessory item. CT Bus cables are available in a 
variety of configurations to accommodate different 
numbers of interconnected boards. Always use a 
cable that closely matches the number of boards 
you are actually using; avoid using a cable that is 
longer than necessary for your particular system. If 
Installing a PCI Board
ISA Slot
PCI Slot
PCI
Board
Computer
Chassis
Remove
Cover
Plate
the cable is longer than necessary, connect it to the 
boards so that all the unused connectors are at one 
end of the cable.
Installing a CT Bus/SCbus Adapter
To connect a the D/120JCT-LSU board to one or 
more boards that are interconnected via SCbus, you 
must use an optional CT Bus to SCbus adapter. This 
adapter assembly is installed on the CT Bus board 
that is physically closest to the SCbus boards; only 
one adaptor is used per system. 
Refer to the documentation shipped with the adaptor 
for more information on proper installation.
Completing the Installation
After installing all the boards required for your 
system and interconnecting them with appropriate 
cables, replace the cover on the computer to 
complete the installation.
5. Connecting to External 
Equipment
Each of the six RJ-14 jacks on the rear bracket of 
the the D/120JCT-LSU board supports two analog 
telephony channels. A standard telephone will not 
function when directly connected to the board.
Note: The RJ-14 jacks use 2 tip/ring pairs with 2 
earth recalls, one for each channel.
Note:
Your CT Bus cable may 
have a different number 
of connectors (drops). 
CT Bus
Cable
Installing the CT Bus Cable
Colored
Stripe
(Pin 1)
6. After Installing the Board
After you install the D/120JCT-LSU board and any 
other Dialogic
®
 boards, you can proceed with the 
following activities:
■
Installing the software - Install the Dialogic
®
system release software as described in the 
Software Installation Guide for your system 
release.
■
Configuring the software - Configure the system 
release software as described in the 
Configuration Guide(s) for your system release.
■
Testing the board - Test the D/120JCT-LSU board 
as described in the diagnostics documentation for 
your system release.
■
Troubleshooting problems - The administration 
and diagnostics guides for your system release 
provide information on troubleshooting problems.
■
For technical specifications and product 
information go to: http://www.dialogic.com/
products.htm. 
7. Removing the Board
Removal of the board is a straightforward process. 
Remove the board using the reverse of the 
procedure described in Section 4, Installing the 
Board above.
8. Warranty and Return 
Information
Warranty Period
For specific warranty information for this board, refer 
to the Warranty section of the Products page, 
located at this URL: http://www.dialogic.com/
warranties/. 
Line 2 Earth Recall
Line 2 Ring
Line 1 Tip
Line 1 Ring
Line 2 Tip
Line 1 Earth Recall
6
5
4
3
2
1
Pinout for RJ–14 Jacks on D/120JCT-LSU Bracket
6
5
4
3
2
1
Contacting Technical Support
Dialogic provides technical support for its products 
through a network of value added distributors who 
are trained to answer technical questions on 
installing and configuring Dialogic® products. If you 
are unsure how to contact your support channel, 
please call Dialogic in the United States at 973-967-
6600 (9am-5pm EST) and we will assist in obtaining 
the appropriate support channel.
Outside the United States please refer to http://
www.dialogic.com/support/contact to obtain local 
contact information. Dialogic also provides direct 
support via Dialogic
®
 Pro™ Services agreements. 
For more details of direct support from Dialogic 
please refer to:http://www.dialogic.com/support/
DialogicPro
Returning a Product
To return a board for warranty repair or any other 
returns, please refer to the following: http://
www.dialogic.com/support/hwfaults.
9. Sales Assistance
If you have a sales question, please contact your 
local Sales Representative or the Regional Sales 
Office for your area. Address, telephone and fax 
numbers, are available at the Dialogic website 
located at: http://www.dialogic.com/contact.htm.
To purchase Dialogic® products, please refer to the 
following website to locate the appropriate supplier: 
http://www.dialogic.com/purchase.htm.
All contents of this document are furnished for informational use 
only and are subject to change without notice and do not represent 
a commitment on the part of Dialogic Corporation or its subsidiaries 
(“Dialogic”). Reasonable effort is made to ensure the accuracy of 
the information contained in the document. However, Dialogic does 
not warrant the accuracy of this information and cannot accept 
responsibility for errors, inaccuracies or omissions that may be 
contained in this document.
INFORMATION IN THIS DOCUMENT IS PROVIDED IN 
CONNECTION WITH DIALOGIC® PRODUCTS. NO LICENSE, 
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO 
ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY 
THIS DOCUMENT. EXCEPT AS PROVIDED IN A SIGNED 
AGREEMENT BETWEEN YOU AND DIALOGIC, DIALOGIC 
ASSUMES NO LIABILITY WHATSOEVER, AND DIALOGIC 
DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, 
RELATING TO SALE AND/OR USE OF DIALOGIC PRODUCTS 
INCLUDING LIABILITY OR WARRANTIES RELATING TO 
FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, 
OR INFRINGEMENT OF ANY INTELLECTUAL PROPERTY 
RIGHT OF A THIRD PARTY.
Dialogic products are not intended for use in medical, life saving, 
life sustaining, critical control or safety systems, or in nuclear facility 
applications.
It is possible that the use or implementation of any one of the 
concepts, applications, or ideas described in this document, in 
marketing collateral produced by or on web pages maintained by 
Dialogic may infringe one or more patents or other intellectual 
property rights owned by third parties. Dialogic does not provide 
any intellectual property licenses with the sale of Dialogic products 
other than a license to use such product in accordance with 
intellectual property owned or validly licensed by Dialogic and no 
such licenses are provided except pursuant to a signed agreement 
with Dialogic. More detailed information about such intellectual 
property is available from Dialogic’s legal department at 9800 
Cavendish Blvd., 5th Floor, Montreal, Quebec, Canada H4M 2V9. 
Dialogic encourages all users of its products to procure all 
necessary intellectual property licenses required to implement 
any concepts or applications and does not condone or 
encourage any intellectual property infringement and 
disclaims any responsibility related thereto. These intellectual 
property licenses may differ from country to country and it is 
the responsibility of those who develop the concepts or 
applications to be aware of and comply with different national 
license requirements. 
Dialogic, Diva, Eicon, Eicon Networks, Eiconcard, Dialogic Pro and 
SIPcontrol, among others, are either registered trademarks or 
trademarks of Dialogic. Dialogic's trademarks may be used publicly 
only with permission from Dialogic. Such permission may only be 
granted by Dialogic’s legal department at 9800 Cavendish Blvd., 
5th Floor, Montreal, Quebec, Canada H4M 2V9. Any authorized 
use of Dialogic's trademarks will be subject to full respect of the 
trademark guidelines published by Dialogic from time to time and 
any use of Dialogic’s trademarks requires proper 
acknowledgement. The names of actual companies and products 
mentioned herein are the trademarks of their respective owners.


