Lucent Technologies manual Dncp Series 400-CO PA-8500 Cabinet Rear View

Chapter 1

Figure 1.7. DNCP Series 400-CO (PA-8500) Cabinet: Rear View

The top of the cabinet has a cable opening that provides access for routing system power cables and communications cables.

The top of the cabinet frame has an amber cabinet fault light that illuminates when a component within the cabinet has failed. (For a more detailed explanation of system status lights, refer to the Appendix

The top region also contains the power input connectors for the duplexed DC power cables, and the alarm relay connector for remote alarm monitoring. Each power cable requires a separate -48V nominal DC electrical source.

Below the power input region (DC power chassis) are two disk shelves which each contain three cooling fans, a SES (SCSI Enclosure Services) unit, a SE-SE (single-ended to single-ended) I/O repeater module and a terminator module.

Below the disk shelves are two PCI card cages. Each card cage contains seven slots for PCI cards, for a total of 14 PCI cards per system. See the PCI-card installation manual for detailed information about a specific PCI card. Each PCI card cage has one bridge card that provides the interface between the logic suitcases and the PCI cards. Each bridge card has a connector for a PC Memory Card International Association (PCMCIA) flash card, a credit-card-sized EEPROM used to boot the operating system.

Beside each of the PCI card cages is a jack for attaching a grounding strap.

Four serial ports at the bottom of the cabinet are used to connect the system to the:

●CPU/memory motherboard within each logic suitcase

●system console

●remote console

●Remote Service Network (RSN) modem (Not all systems are connected to the RSN. For an

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