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As a government organization, Townsville Police Department needs a telecommunication system because of the emergency calls, recommended calls, official calls and communication within the department. There are several types of telecommunication system that provides services for organizations as Townsville Police Department. But, mainly there are two types of telecommunication system set ups which are suitable for a police department. They are Private Branch Exchange (PBX) and Voice over Internet Protocol (VOIP).

PBX

Private branch exchange (PBX) is a telecommunication exchange that serves a particular business or office, as opposed to one that a main carrier or telephone company that serves for many organizations or for the general public. PBX provides the communication within the private organization networks and public switched telephone networks.

PBX extension permits the entities which are small or medium in volume to obviously connect their remote office and tele-workers to the community PBX throughout the corporate IP communication infrastructure, which is commonly under-utilized. PBX extension maximizes bandwidth efficiency by connecting with voice and data traffic onto one network.

VOIP

Voice over internet protocol (VOIP) is a telecommunication technology that enables voice transmission to be sent over the internet sometimes containing text messages or data. VOIP is location independence and fairly fast system. It is integrated with other services such as data exchange, messaging, video conversation and audio conferencing. With VOIP it can be call from any location where there has a broadband connectivity. VOIP is not only flexible for any local calls but also convenient for any international calls.

VOIP network signal activates and coordinates the different apparatus to complete a call. But, there are some technical and architectural differences in a VOIP network.

The main equipment that would be installed

In Townsville Police Department, there have four district departments and the police headquarter. Sergeants in each district will have one work station between and there will be five workstations for use by the constables in each district. So, each police station requires one main phone line. As a police department, telephone lines may busy with variety of phone calls. So, every headquarters need five extensions for at least. For five departments, there would be twenty-five phone handsets and accessories are required. Five phone network hubs and cables are also required to set up the extension networks. Townsville police department also has a serious crime squad which has twenty detectives and each detective has a work station. Thus, another main phone line is required and that phone line should be divided into twenty extensions for twenty work stations.

Therefore, six main phone line and forty five extensions will covered the four districts headquarters and the serious crime squad.

The features available with each system

PBX

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