Large enterprises, schools, hospitals, etc., usually have their own parks with multiple buildings in the parks, and personnel of different departments and functions are distributed in different buildings. Telephones have become a direct and effective means for personnel in the parks to work together。However, the traditional campus telephone deployment scheme often faces the following pain points:

The park is large, the distance between the buildings is far, and the cable connection cost is high and the construction period is long.

Some staff move frequently in the park, often unable to receive the desktop extension phone;

Unable to connect to various enterprise service management systems (such as broadcast/scheduling systems)。

Demand analysis

In order to meet the daily communication between the unit and each operation unit and the emergency command needs of the unit and operation unit, a private network command system is planned to be built:

Requirement 1: The relay stations of the unit and the two operation detachments should be interconnected to realize the independent command of the terminal in the three coverage areas;

Requirement 2: A set of IP communication system is deployed in the unit park, which is used for daily office communication and scheduling, and realizes functions such as remote door opening and broadcast;

Requirement 3: Provide one-click intercom for special areas such as computer rooms, workshops, and duty rooms。When you need help, different functional departments can call the command center for help with one click。

solution

According to the information and requirements provided by customers, combined with years of experience in the design and construction of wireless intercom system of Beifeng Communication, a set of IP interconnection system based on DMR digital wireless intercom technology is built:

The TR8500L digital repeater and IP interconnection controller (built-in dandelion server) are deployed in the unit, and each detachment deploys TR925 portable repeater and dandelion 4G channel to realize network interconnection, so as to realize the interconnection of each relay.

Set up 4 groups: all-call group, intra-unit, operation sub-unit 1, operation sub-unit 2, set up 3 receiving groups to receive the unit and the all-call group respectively. When calling the all-call group, the terminal can call all in the coverage area, and when calling the intra-unit or each sub-unit, independent communication can be realized.

When there is no public network, the base station automatically weakens into a single base station mode to meet the emergency command needs of the park units and operation teams。

Scheme characteristics

The system makes full use of the intelligent networking technology of Dandelion router, does not need to rely on public IP, only needs to access the Internet, you can build a wireless intercom system with IP interconnection, and achieve wide coverage across regions。

The system adopts leading computer technology, information technology and communication technology at home and abroad, combined with advanced architecture and mainstream products of technological development, to ensure the efficient and stable operation of the system。

Each base station relies on the conventional broadband network, 4G and other public network resources as a link access, so that the operation team can flexibly and flexibly achieve real-time interconnection with the headquarters within the coverage of 4G public network。

Application value

The DMR digital wireless intercom command and dispatch system based on IP technology architecture of Beifeng integrates the interaction of various information media such as voice, image, data and text messages。Through a set of platforms to achieve voice scheduling, conference scheduling, broadcast scheduling, personnel positioning management, message push and other multimedia integrated command and scheduling services，It can meet various application scenarios such as daily duty, emergency command, mobile law enforcement, and inspection，Meet the command center's requirements for equipment integration, flat command and intelligent operation，It has truly realized the concept of integrated command and dispatch of "de-siloization"。