The internal communication work of prisons and correctional facilities places special emphasis on security, confidentiality and management norms to meet the needs of daily communication services and large-scale command and dispatch services in emergency situations. At present, most prisons and correctional facilities in the country use prison telephone dispatching, most of which are regular transfers, relying on the virtual private network of the public network. They can guarantee basic voice communication functions in daily work.
However, the working environment inside prisons and correctional facilities is complex. Communication work requires detailed group scheduling according to different work areas and functions; it needs functions such as emergency calls in special situations; it needs powerful and perfect management functions in the face of complex communication environments; it needs security and confidentiality such as wireless voice communication. At this time, the traditional transfer system and virtual private network system cannot meet these requirements of the prison wireless intercom dispatching command communication system.
To build an emergency command system for prisons and correctional facilities, it is necessary to have the following functions:
(1) The confidential wireless intercom communication method is independent of public network communication, avoiding communication inside and outside the prison, and effectively ensuring the security of prison communication.
(2) It has a multi-level communication command and dispatch function, which can group different personnel in the prison, so that multiple policemen can communicate independently without interfering with each other; the warden can call alone or in groups, which is convenient for unified command and dispatch.
(3) It has the function of emergency command and dispatch, and can provide timely emergency communication methods in case of emergency
(4) It has the function of multi-level dispatching and commanding to ensure the information exchange between leaders at all levels and police officers;
Solution:
Combined with the actual communication application requirements of prisons and correctional facilities, a prison cluster wireless command and dispatch solution is proposed.
1) It is recommended to establish a single base station cluster wireless intercom system in the community to transmit the entire prison letter coverage wirelessly. The single-area single-base station system is the most basic networking form of the trunking system, which is mainly used in fields with wide coverage and a large number of users, and multi-level scheduling. The system adopts a large-area coverage system. In a relatively flat area, the coverage radius of the base station can reach 20 kilometers.
2) The system adopts the combination of centralized and distributed control. The call establishment and switching control of the mobile terminal are controlled by the system. The heart is done and the link between the control center and the base station fails. At the same time, the base station can still work in a single-station cluster mode with weakening. The mobile terminal can automatically roam among multiple base stations.
(3) The intercom wireless intercom system of prisons and correctional facilities can be connected to the Internet, and the prisons can be interconnected, and the intercoms in each prison can realize automatic roaming between prisons. Prison management after networking The bureau can call and dispatch any walkie-talkie user in any prison. Realize the unified command, dispatch and management of emergencies. Networked system construction model The construction of this system is centered on the prison management network, with softswitch servers and scheduling, management, and monitoring terminals configured. Networking between prison cluster wireless intercom systems through the IP link provided by the provincial prison network
Each city's trunking system is responsible for local wireless coverage and has the ability to schedule and maintain. The Bureau of Prisons has a network management center. Responsible for network users, management, system command call, group call control, monitoring and other functions, remotely dispatch, maintain, and monitor the entire system, with the highest management authority and scheduling authority restrictions.
Post time: Mar-06-2023