User's Manual

Mobile WiMAX RAS SPI-2L10 System Description/Ed.00

3-17

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) signal receiver, distributes the

received ToD to CC software for call processing, and manages faults concerned with the ToD.

The UFM supports statistics and status management of Ethernet switch devices.

Main functions are as follows:

y 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.

y 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.

y 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

y Inquiring and changing the failure configuration information

Inquiring and changing the parameters such as the failure severity and the threshold

for the generation

y 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 ACR and the upper management system.

y Failure history information management and save

y 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.

y DD Interface

The interface between DD and applications is provided for statistics and status

management of devices.