Page 506 of 906 NT7D16 Data Access card553-3001-211 Standard 3.00 August 2005Large SystemIn Large Systems, the DAC is fully supported in IPE modules. These specialslots on the DAC have 24-pair cables pre-wired to the Main DistributionFrame (MDF) in card slots 0-15. Any IPE slot will support the first four portson the DAC if connections are made at the MDF. Most IPE modules can beupgraded to wire 24-pair cables to the MDF for all card slots.Note: For directions concerning the pinouts for the MDF, refer toCommunication Server 1000M and Meridian 1: Large SystemInstallation 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 systemIt is recommended that you begin the installation from the right hand side(when facing the backplane), starting with slot 0 and moving towards slots onthe left side. If you wish to add more than six DACs, and require slots 8through 15, remove the input/output (I/O) panel. Be aware that a full shelfinstallation can take up to 3 hours. You need the following equipment toupgrade 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 nutdriverSystem compatibilityTo support the 24-pair requirement of the DAC, some cabling may need to beupgraded (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 (connectdirectly to the MDF).
