Nortel Circuit Card Installation Manual page 506

Page 506 of 906
Large System
System compatibility
553-3001-211 Standard 3.00
NT7D16 Data Access card
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
To support the 24-pair requirement of the DAC, some cabling may need to be
upgraded (Table 167). 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).
August 2005