ZTE Corporation ZXG-BTS2 Benutzerhandbuch
ZXG10-BTS (V2.9) Technical Manual
12
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It includes the system control module and implements the power-
on sequence for application processes. In addition, this layer
includes some miscellaneous functions of the operating system
includes some miscellaneous functions of the operating system
such as redirection of the printing messages.
iii. LNKDRV
It is the device driver.
Working with BSP, LNKDRV provides equipment-independent
drivers for LNKCTR. At the same time, this part also includes a
Working with BSP, LNKDRV provides equipment-independent
drivers for LNKCTR. At the same time, this part also includes a
frame number synchronization module, implementing the frame
number synchronization between active/standby CMMs, active
number synchronization between active/standby CMMs, active
CMMs of the master rack and the secondary rack, and master CMM
and TRMs.
and TRMs.
iv. LNKCTRL
It is the communication link control layer module.
It consists of multiple communication link control modules, like
It consists of multiple communication link control modules, like
LapD, HDLC, LMComm.
LapD communication link control module
LapD is the communication link control module of the Abis interface.
LapD is the communication link control module of the Abis interface.
HDLC communication link control module
HDLC is the communication link control module inside the rack.
They all communicate in a point-to-point way.
There are three types of communication links: CCComm, CMComm
and CTComm.
CCComm: The CCComm is the auxiliary communication link
HDLC is the communication link control module inside the rack.
They all communicate in a point-to-point way.
There are three types of communication links: CCComm, CMComm
and CTComm.
CCComm: The CCComm is the auxiliary communication link
between the master CMM of the master rack and that of the slave
rack. Physically, it is a 2 M PCM line, which facilitates the
rack. Physically, it is a 2 M PCM line, which facilitates the
centralized data collection of LMU.
CMComm: As the communication link between the active CMM and
CMComm: As the communication link between the active CMM and
the standby CMM, it implements the data synchronization between
the active CMM and standby CMM. Physically, it uses 1 M HW.
CTComm: As the communication link between the active CMM and
1 ~ 12 TRMs of its racks, the CTComm implements the parameter
configuration of TRM and alarm collection. Physically, it uses a 64
the active CMM and standby CMM. Physically, it uses 1 M HW.
CTComm: As the communication link between the active CMM and
1 ~ 12 TRMs of its racks, the CTComm implements the parameter
configuration of TRM and alarm collection. Physically, it uses a 64
Kbit/s timeslot in 4 M HW.
LMComm
Foreground/background link control module with RS232 as its
physical interface. It is a self-defined point-to-point link control
Foreground/background link control module with RS232 as its
physical interface. It is a self-defined point-to-point link control
protocol and character-oriented single-bit stop and wait protocol.
5. APP layer:
It is the application layer, consisting of three parts:
i. O&M
i. O&M
As the core of the application layer, it receives the O&M messages
of the Abis interface and implements parameter configuration,
status and alarm management, software version management,
status and alarm management, software version management,
equipment test and external alarm collection.