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Outage Classifications

Outage Classification	Description	Supplier Attributable	Service Provider Attributable	3rd Party Attributable
HARDWARE FAILURE	Outages due to a random hardware or component failure not related to design. (MTBF)	X
DESIGN - HARDWARE	Outages due to a design deficiency or error in the system hardware.	X
DESIGN - SOFTWARE	Outages due to faulty or ineffective software design.	X
PROCEDURAL		Outages due to a procedural error or action by an employee or agent of the system or equipment supplier.	Outages due to a procedural error or action by an employee of the service provider. Didn't accept available redundancy	Outages due to a procedural error or action by an employee of an organization other than the service provider or system supplier.
FACILITY RELATED	Outages due to the loss of facilities that isolates a network node from the remainder of the communications network.			X
POWER FAILURE - COMMERCIAL	Outages due to power failures external to the equipment, from the building entry out			X
POWER FAILURE - BATTERY/GENERATOR	From the building entry in to the element		X
INTERNAL ENVIRONMENT	Outages due to internal environmental conditions that exceed the design limitations of the Vendor system's technical specifications.		X;
EXTERNAL ENVIRONMENT	Outages due to external environmental conditions that exceed the design limitations of the Vendor system's technical specifications. Includes natural disasters, vandalism, vehicular accidents, fire, etc.			X
TRAFFIC OVERLOAD	Outages due to high traffic or processor load that exceeds the capacity of a properly designed and engineered system.		X
PLANNED EVENT	Planned events not covered by other categories, e.g. equipment moves but not corrective actions	Scheduled event attributable to the supplier that does not fit into one of the other outage classifications	Scheduled event attributable to the service provider that does not fit into one of the other outage classifications	Scheduled event attributable to a 3rd party that does not fit into one of the other outage classification;
UNKNOWN	Outages for which root cause cannot be identified. Should only be selected if thorough investigation did not yield a cause.	X
UNDER INVESTIGATION	Outages under investigation where the root cause has not yet been determined. Assigned to supplier attributable unless otherwise identified. To be used initially; not a final classification.
MAINTENANCE WINDOW	An outage that occurs during an assigned maintenance window, and during this window the system is not required to be in service. Is not applicable to 24x7 systems