Caltta Broadband Trunking Communication system, as part of a Safe City project, is now commercially utilized by the Ministry of Interior (MOI) of Zambia and plays a pivotal role in empowering the local public safety authorities to safeguard the communities.
In 2018, the MOI of Zambia launched the "Zambia Safe City Project" to build a modern communications system for law enforcing forces. MOI needed a unified communication and command system to increase law enforcing efficiency of various departments and ultimately to ensure the safety and wellbeing of the communities.
After comparison of different technological solutions, Zambia MOI selected B-TrunC and Caltta was awarded as the broadband trunking communications system provider. After careful planning and meticulous survey, the B-TrunC network is deployed to cover the country capital, provincial capitals, large towns, and major traffic arteries. Caltta also provided various types of broadband trunking terminals for the police departments at all levels across the country. The system realized voice, multimedia, and data services such as trunking call, positioning, video/images transmission and unified command and dispatching. It effectively improved the efficiency of cross-departmental collaboration and the speed of emergency response. The air interface of the B-TrunC standard adopts innovative downlink shared channel technology, which greatly improves the spectrum efficiency of group communication services.
The "Safe City Project" adopted B-TrunC standard as the core technology. B-TrunC is a broadband trunking communications standard initiated by China Academy of Information and Communications Technology (CAICT) and administrated by the B-TrunC Broadband Trunking Industry Alliance. In November 2012, China Communication Standards Association (CCSA) formally launched the B-TrunC standard. Recommended by ITU-R, B-TrunC became the Public Protection and Disaster Relief (PPDR) broadband trunking air interface standard in November 2014.
The system utilized 400MHz TDD LTE frequency band, integrating multiple systems including broadband trunking communication, video supervision (VSS), video conference (VCS), emergency response (CERS), intelligent E-Police, and other systems. Through strict implementation and dedicated service from Caltta, a comprehensive nationwide supervisory system is now covering Zambia's national capital, provincial capitals, large towns, and main traffic routes. Various broadband trunking terminals are used by police departments across the country. The system offers multimedia services such as voice, PTT, positioning, data collection, video and image transmission, and it realizes unified command and dispatch, effectively improving the efficiency of cross-departmental collaboration and the responding speed of emergencies.
Video Supervision System
1. Real-time live audio and video streaming
2. Protection of national and personal property and safety
1. Fixed indoor Supervision, such as the subway and airport
2. Fixed outdoor Supervision, such as a square
3. Outdoor mobile Supervision, such as a bus
1. The trunking system is applied to the daily application of security departments and the police, emergency processing in disasters such as explosions, fire, and the integration of police security communication.
2. Performance: The high bandwidth of over 100 Mbps and call setup delay of less than 300 ms greatly improve the efficiency of TD-LTE trunking services.
3. Services: Abundant services allow users to witness the superiority of 4G technology.
4. Maintenance: Different from the traditional extensive trunking system, the GUI makes operation and maintenance simple and easy.