Zte zxmsg 5200, Техническое руководство

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ZXMSG 5200 (V2.0) Technical Manual
48 Confidential and Proprietary Information of ZTE CORPORATION
2. Resource management module
The module is used to manage physical resources such as DTMF, RTP
and TONE. this module functionally consists of three parts: getting
resource, releasing resource and managing resource status. The
module classifies resources to create corresponding queues according
to different resources type and status.
3. Database module
The module serves to describe such information as ZXMSG 5200
configuration and performance, including global attribute, physical
configuration, H.248 protocol data, terminal attribute and dynamic
data management.
4. Database active/backup synchronization and backup module
The module is used for data backup of the foreground, covering data
synchronization between active part and standby part and saving
backup of data of this machine.
5. Man-machine Command Module
The module serves to receive, explain and execute man-machine
commands input by subscriber on the Telnet terminal, providing such
functions as querying data, inserting data, deleting data and blocking
and unblocking.
K e y T e c h n o l o gi e s
1. Database organization and management
The database adopts a relational structure and an object-oriented data
organization mode.
The ZXMSG 5200 data are categorized into data table, data table index
and data table queue. Every kind of data can be defined as system
data object category. The system will define and manage data in one
same object category uniformly.
A concrete data object is called as a data instance of a certain data
object category. The system distributes an only 16-bit integer to the
data instance of each data object category. This 16-bit integer is called
as a data instance handle, which implements access to a data instance.
One advantage of this method is that data instance increase will not
affect data management stability. As a result, the system keeps stable.
Another advantage is that it is convenient to expand the data object
category. The different data object categories are managed separately.
As a result, original data security will not be damaged after the data
object category is expanded.
Each kind of data object is provided with corresponding basic operation
interfaces, such as interfaces for searching, inserting, deleting and
modifying, to manage data.
2. Database data access concurrency
The system provides multiple functions for multiple subscribers. As a
result, multiple tasks (processes) may access to one same database at
the same time. In this case, although the subscriber program is
executed properly, wrong overall results may occur because of inter-