Nortel Networks DCT1900 manual Modular Cabinet DLU Cabling, Introduction

Technical Product Manual - DCT1900

Installation Instructions, Modular Cabinet – DLU Cabling

CHAPTER 24

Modular Cabinet – DLU Cabling

24.1Introduction

This chapter describes the installation of the cabling between the DLU(s) and the PBX. The DLU cable set, AWS1019, consists of (12) 2 pair cables individually terminated in a RJ11 connector.

Each DLU cable is designed to connect two DLU boards, thus 24 digital extensions, to a single 66 Block. The cable terminates in a 25 pair male AMP connector which mates with a Siemens 66m250 Block or the connector can be cut off and the cables punched down on other types of blocks. Refer to Table 24-1 for a pin out of the cable

The Modular Cabinet is provided with a ground strip to connect the cables from the DLUs and the CLUs to ground. These ground connections are necessary for EMI suppression reasons.

24.2Installation

The 24 connectors on the DLU end of the cables are labelled P1 through P24 and should be installed as shown in Fig. 24-2. Connector 1 goes to the first port of the DLU which is at the bottom of the board. The male AMP is connected to the 66 Block.

The orientation of the shielding clamps should be as shown in Fig. 24-1.

Shielding clamp at the back row

Shielding clamps at the front row

Fig. 24–1 Ground Strip with Shielding Clamps

Install-DCT1900/R8/mw	24-1
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