Nortel Networks 553-3001-211 manual Large System, System compatibility

Page 494 of 894 NT7D16 Data Access card

Large System

In Large Systems, the DAC is fully supported in IPE modules. These special slots on the DAC have 24-pair cables pre-wired to the Main Distribution Frame (MDF) in card slots 0-15. Any IPE slot will support the first four ports on the DAC if connections are made at the MDF. Most IPE modules can be upgraded to wire 24-pair cables to the MDF for all card slots.

Note: For directions concerning the pinouts for the MDF, refer to

Communication Server 1000M and Meridian 1: Large System

Installation and Configuration (553-3021-210).

Before you begin, power down:

•the IPE module only, if it is a DC-powered system

•the entire column, if it is an AC-powered system

It is recommended that you begin the installation from the right hand side (when facing the backplane), starting with slot 0 and moving towards slots on the left side. If you wish to add more than six DACs, and require slots 8 through 15, remove the input/output (I/O) panel. Be aware that a full shelf installation can take up to 3 hours. You need the following equipment to upgrade the cabling:

•A0359946 Amphenol cables

—These connectors include all the connector and screw apparatus.

—You need one cable for each DAC.

•cable ties

•wire cutters

•A3/16 nutdriver

System compatibility

To support the 24-pair requirement of the DAC, some cabling may need to be upgraded (Table 162). See “Upgrading systems” for more information.

Ports 0, 1, 2, and 3 of the DAC work in any standard 16-pair IPE slot (connect directly to the MDF).

553-3001-211 Standard 2.00 September 2004