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In recent years, the needs of wireless intercom system users for private network communications are not only "hearing", but also "seeing" and realizing "efficient command". The old voice communications products can no longer meet their needs. Users need comprehensive communications solutions covering voice, data, video, and more, and they also require professional communications systems to be seamlessly integrated with their internal management systems. The visual command and dispatch system for public security integrates various technologies such as voice, GPS, and GIS to adapt to ever-changing user needs, demonstrating a comprehensive feature.

1. Process of Digitization, Clustering, and Multimode of Wireless Intercom System Communications Technologies
The technology of wireless comms accelerates the integrated transmission capability of  information, images, and data of digital walkie-talkies, and customized application software integrates communications of the action team with the work system, greatly improving work efficiency. This kind of mobile communications solution customized for different mobile work teams with the aim of improving efficiency, will become a new trend in both administrative and business fields.

2. Frequency of the Wireless Intercom System—Valuable Resource
With the rapid development of mobile communications, the contradiction between the limited spectrum resources and the rapid increase of wireless users has become increasingly prominent, and serious frequency shortage has occurred. The way out to overcome frequency crowding lies in adopting various technologies with rational utilization of frequencies. Compared with the analog FM walkie-talkie, digital walkie-talkie wireless comms can improve the efficiency of spectrum utilization, and at the same time, a variety of corresponding technology systems have emerged.

Meanwhile, some countries and regions are also actively formulating laws and regulations to guide wireless users to purchase and use systems and equipment that can improve the spectrum utilization rate from the policy level. For countries with extremely tight spectrum resources, the corresponding wireless regulatory agencies have also proposed specific handover timetables. Only by improving the utilization rate of spectrum resources and greatly improving the system capacity, can the development needs of future wireless mobile communications be better met.

3. Development of Wireless Intercom Systems
The development of users' commercial needs has promoted the integration of digital broadband and narrowband technologies. The current narrowband digital communications system can no longer meet the user's business requirements, and needs to rely on the broadband communications system in terms of voice scheduling, short data transmission, image transmission, and database access. However, in the field of professional wireless comms, the broadband system itself also has some shortcomings. For example, the broadband system needs to use small cell coverage to solve the problem of frequency reuse. Compared with the large-area system, the system cost is greatly increased, and the system reliability is reduced. In the case of emergencies, it is impossible to form an emergency communications network with a large coverage in the short term. Therefore, the existing narrowband trunking communications system and the broadband access system are combined to form a multimedia trunking fusion network integrating voice, data, image, and video, which can better meet the needs of industrial users and will become the main direction for the development of the next-generation digital trunking system technology.