Zte ZXG10-OB06, Техническое руководство

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Chapter 1 - System Architecture
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Link Description
CCComm It is the auxiliary communication link between the master CMM of
the master rack and that of the extension cabinet. Physically, it is
a 2 M PCM line, which facilitates the centralized data collection of
LMU.
CMComm It is the communication link between the active and standby
CMMs. It implements the data synchronization between the CMMs.
It is 1 MHz HW-cable in actuality.
CTComm It is Foreground/background link control module with RS232 as its
physical interface. It is a self-defined point-to-point link protocol
and character-oriented single-bit stop and wait protocol.
• LMComm: Foreground/background link control module with RS232
as its physical interface. It is self-defined point-to-point link control
protocol and character-oriented single-bit stop and wait protocol.
A P P l a y e r
It is the application layer. It consists of three parts:
• O&M: As the core of the application layer, it receives the O&M
messages of the Abis interface and implements the following:
• Parameter configuration
• Status and alarm management
• Software version management
• Device test
• External alarm collections
• Data Base Subsystem (DBS): The application layer is designed with the
database as a core. The database coordinates assign configuration
parameters. It also synchronizes data between the active and standby
CMMs and between the foreground and the background.
• Local Maintenance Unit (LMU): It is the local O&M unit, including
foreground and background operation interface. It works with the
database synchronization module to complete the local parameter
configuration, equipment status and alarm collection. It also includes
operating interface of equipment test to implement test functions of
the local BTS. The system tool is a series of developer-oriented tools
for system diagnosis and test for the rapid location of faults.
Frame Unit Controller (FUC)
FUC software module is located in the TPU of the TRM module. It
processes radio signaling over every radio carrier and signaling on BSC
interface and manages all channels. Its major functions are as follows: