To adopt a variety of technology to achieve the smooth transition from analog system to digital system,

and to guarantee no interruption of the police service while system upgraded.　

I. Sector Demand

In recent years, the 350 million wireless communication system has been widely used in all kinds of policing work, basically has met the demand of public security organs at all levels “for unified command, rapid response, cooperative engagement,” and has provided strong technical support for the flat command of public security organs.

At present, the 350 million wireless communication system, with which public security organs are largely equipped, is used in analog communications system. With the development of professional wireless communication technology, the transformation of the public security system to bring about the comprehensive improvement of policing work requirements, and in accordance with the unified planning of the Ministry of Public Security, public security organs at all levels will fully launch the 350 million wireless communications, and enter the period of digital transformation. Digitization become an inevitable trend in developing public security wireless private network communication and the public security organs will be faced with analog to digital transition in an all-round way.

It is a major issue facing and concerning the national public security organs at all levels that how to follow the principle of the Ministry of Public Security – “to adjust measures to local conditions, to make overall plans and take all factors into consideration, to realize smooth transition and steady progress”, and how to ensure the gradual reformation, construction, and smooth transition to the PDT digital trunking communication network under the premise of not affecting both the operation of the existing 350 million analog communication network and the daily policing-work operation of public security organs. And this includes that whether the existing 350 million analog communication system and the mobile stations invested heavily can continue to be used, and whether the new PDT digital trunking system and mobile stations can be compatible with the analog ones, if so, to what extent, and whether the new digital system can be connected to the original analog one.

II. Solutions

ADT-6000 is a new generation of the wireless digital trunking communication system independently researched and developed by ACETEC based on the soft-switch and compliance with PDT digital trunking standard. The development of the system is a combination of nearly 20 years of experience in the technology, the accumulation of products, and the support for emergency command and communication in the field of professional mobile communication, is the full absorption in advantages of existing analog and digital trunking system, is the detailed exploration into all links in network planning, network construction, operation routines and procedures, and is the application of innovative technology and methods to ensure a smooth transition.

1. S - 6000 digital to analog compatibility switch center

S-6000 switch control center of the entire IP soft switch can realize PDT digital trunking, analog trunking, and analog conventional networking, and can achieve the unified network management, command and dispatch to ensure smooth transition of the public security 350 wireless communication network from analog to digital.

2. B-6000 Digital and analog compatibility base station

It can provide both PDT and MPT control signaling and dynamic switch of traffic channel work patterns as required, and this facilitates PDT interphones and MPT interphones in dual-mode base stations to communicate with each other to ensure that the original interphones in PDT digital systems continue to be used and the original investment is protected.

3. Digital and analog compatibility mobile station

AP-330 and AP-550 dual-mode mobile station has four kinds of communication modes at the same time - the PDT digital trunking /convention, MPT analog trunking/convention. These modes can be used both into the PDT digital network and into the existing MPT analog network to ensure the smooth transition of analog to digital.

4. The system adopts the regional system, with its coverage similar to that of analog one, and the system’s numbering scheme gives consideration to the existing standards, with its operation continuing in original mode to ensure smooth transition of network planning and operation routines. ;

“No communication interruption" in any case is the requirement of the police service for the 350 million wireless communication system, and is also the requirement of social security management, ACETEC’s solution scheme for the smooth transition of analog to digital has been verified and it can help you achieve smooth network upgrades.