Samsung DCS Application Note No 14 - Issue 01
For Further Information Call LSP Communications
No. 14 September 1997

Topic Primary Rate ISDN

Introduction

This Application Note describes the installation, configuration and operation of the PRI cards in the
Samsung DCS for use with Telstra’s On Ramp 10, 20 and 30 Primary Rate ISDN service. The
Primary Rate Interface (PRI) is not supported on the DCS Compact.

DCS PRI ISDN Features

The DCS and Compact support Direct Dial In (DDI) and Calling Line Identification Presentation
(CLIP). The DCS system is able to display either the CLI number or the CLIP name, using a number-
to-name translation table.
The DCS currently does not support Calling Line Identification Restriction (CLIR), Malicious Call
Trace (MCT) or Sub-Addressing. Customers requiring Calling Line Identification Restriction should
arrange for this facility to be provided in the network by Telstra.
The Telstra On Ramp service does not support certain MacroLink supplementary services such as
Advice of Charge. However, with the release of Version 4 Software the DCS will support the ETSI
Advice of Charge feature which we expect Telstra to release later this year.
The DCS PRI card supports on Primary Rate Access (PRA) providing up to 30 B channels. OnRamp
10, 20 & 30 provide 10, 20 and 30 B channels respectively.

Installing the PRI Card

The following restrictions apply to the installation of the PRI card into a DCS system -
• PRI cards must be installed in slots 1,3 or 5 of the DCS KSU only.
• The slot immediately to the right of the PRI card (slot 2 or slot 4 or slot 6) must be left empty.
• The PRI card has priority in the system and therefore the PRI card must be installed in card slots
to the left of any BRI or BSI cards installed.
• A maximum of 3 PRI cards can be installed in the DCS KSU.
To install a PRI card in the DCS system -
1. Turn off the power to the DCS.
2. Insert the PRI card into slot 1, 3 or 5 in the KSU. Note that the PRI card can only be fitted in the
DCS basic KSU. The PRI card will not operate in a DCS expansion cabinet.
3. Fit an RJ45 wall mount socket onto the wall within 2m of the DCS cabinet.