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CHAPTER 3. Outdoor SPI-2331 Architecture
3.3.3.6 Universal Fault Management (UFM)
UFM manages the ACR faults and the status of software and hardware. UFM informs the
detected failures to the upper management system by the filtering function, and applies the
severity changes and the threshold to the fault management system. In particular, the UFM
receives ToD from a Global Positioning System(GPS), distributes the received ToD to CC
software for call processing, and manages faults concerned with the ToD.
In addition, the UFM provides the interface function with Device Driver(DD) to support
statistics and status management for devices such as Marvel switch 98DX246/98DX166
and Comet PM4358 of ULDB/MEI/MTA. The interfaces for Marvel switch
98DX246/98DX16 and Comet PM4358 are called Marvel Switch Device Driver
Interface(MVSDDI) and Comet Device Driver Interface(CMDDI), respectively.
The main functions of UFM are as follows:
Failure Management
− Hardware and software failure management by interrupt and polling
− When the failure is detected, it is reported to the management system and the
related block.
Status Management
− Status management for the components
− When the status information of the resource is changed, it is reported to the
management system and the related block.
Failure filtering and inhibition
− The filtering function is applied to many kinds of the occurred failure, and only the
failure of the original reason is reported.
− Function of inhibiting reporting a specific kind of failure or a specific system
according to the operator's request
Inquiring and changing the failure configuration information
Inquiring and changing the parameters such as the failure severity and the threshold
for the generation
Failure audit
Auditing the failure is performed when initializing and restarting the system and when
the operator requests to minimize the inconsistency of the failure information between
the outdoor SPI-2331 and the upper management system.
Failure history information management
The failure history information is managed and saved, and the failure information is
saved in its own nonvolatile storage periodically.
Call fault reporting
In case of the call fault, the related information(call status, error code, MS information,
etc.) is collected and reported to the management system.
DD Interface
The interface between DD and applications is provided for statistics and status
management of devices.
3-18
© SAMSUNG Electronics Co., Ltd.
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