Knowledge of the following terms and acronyms is useful in the administration of the Netra CT server.


alarm card

A card that occupies a slot in the Netra CT server. The alarm card responds to events, such as I/O card failures or excessive heat. Software that resides on the card can take action in response to such events.

alarm rear transition module

A module that extends the alarm card connectors to the rear of the chassis.


basic hot-swap

One of the hot-swap methods. In the basic hot-swap model, the hardware connection process can be performed automatically by the hardware, while the software connection process requires operator assistance. See hot-swap, full hot-swap


CompactPCI (cPCI)

A standard for computer boards and buses. CompactPCI is adapted from the Peripheral Component Interconnect (PCI) Specification for industrial and/or embedded applications requiring a more robust mechanical form factor than desktop PCI. CompactPCI is supported by the PCI Industrial Computer Manufacturers Group (PICMG), a consortium that uses PCI for embedded applications.


field replaceable unit (FRU)

From a service point of view, the smallest irreducible elements of a server, such as the Netra CT server. Examples of FRUs are drives, I/O boards, and power supplies. Note that a server, with all of its boards and other components, is not a FRU. However, an empty server is.

full hot-swap

One of the hot swap methods. In the full hot swap model, both the hardware and the software connection process are performed automatically.

See hot-swap, basic hot-swap



Implies the ability to remove boards from and replace boards in a running server. See full hot-swap, basic hot-swap



The functional equivalent of a backplane. The midplane is secured to the rear of the server. The CPU board, I/O boards and storage devices plug into the midplane from the front, and the RTMs plug into the midplane from the rear.



An acronym for Network Equipment/Building System. A set of requirements for equipment installed in telco offices. These requirements cover personnel safety, protection of property, and operational continuity. "NEBS testing" involves subjecting equipment to various vibration stresses, fire, and other environmental insults. There are three levels of NEBS compliance, each a superset of the preceding. NEBS level 3, the highest level, certifies that a piece of equipment can be safely deployed in an "extreme environment." A telco central office is considered an extreme environment.

The NEBS standards are maintained by Telcordia Technologies, Inc., formerly Bellcore.



Acronym for the Peripheral Component Interconnect. See CompactPCI (cPCI).


Acronym for the PCI Industrial Computer Manufacturers Group. (PCI stands for Peripheral Component Interconnect.) PICMG is the group that promulgates the CompactPCI standard.


Acronym for the PCI mezzanine card (PMC) I/O module (PIM).


Acronym for the PCI mezzanine card (PMC).


rear access

The model of the Netra CT server that is configured so that all of the cables come out from the rear of the chassis.

rear transition module (RTM)

The rear transition modules extend the connectors to the rear of the chassis.


reliability, availability, serviceability (RAS)

Refers to hardware and software features that implement or improve the reliability, availability, and serviceability of a server.


system status panel

A module that uses LEDs to indicate the status of key components within the Netra CT servers. The system status panel has one set of LEDs for each component within that particular server.

system controller board

A hot-swappable component located behind the system status panel. It feeds system status information to the system status panel, where LEDs give feedback on the status of the key components within the Netra CT servers.



A unit of measure equal to 1.75 inches.