User's Manual

CHAPTER 3. SPI-2213 Architecture

3-28

PAM Implementation

PAM is implemented on the MMA-G as shown below. MMA-G has 1:1 active/standby

redundancy.

Figure 3.20 PAM Block

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) 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.

UFM Main Functions

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

MRA-F #5

MRA-F #4

MRA-F #3

MRA-F #2

MRA-F #1

MRA-F #0

MMA-G

MEI-B