Design and implementation of a military hospital calls system management based on voice over internet protocol

Abstract

Voice over Internet Protocol (VoIP) has become a key technology of communication. This research aims to the development of a VoIP system based on TrixBox, to work on any HOSPITAL network. After studying and analyzing the features, the maximum number of patients, and the monthly bills of the existing telephony system i.e. MILITARY HOSPITAL PBX (Private Branch exchange), the research has been focused on necessity to deploy a Hospital VoIP system. After those studies I find that this analog PBX is expensive and lacks some flexibility. These results have permitted me to develop a VoIP system based on TrixBox (Asterisk, CentOS, FreePBX,…. ). A prototyping method has been used to develop a HOSPITAL VoIP system. This system provide different telephony features such as Voice and Video calls, Voicemail, ring group, IVR (Interactive Voice Response), queuing, call parking & transfer, finally the system has been configured to provide conferencing application. QoS metrics calculations and verifications have been conducted in order to verify that HOSPITAL IP (Internet Protocol) network can support VoIP communications. The said system provides a Graphical User Interface, usable when the administrator wants to configure or manage the VoIP system. The research ends with a conclusion and recommendation, through this stage we suggest that private and public institutions in Chad can use this VoIP system in order to reduce monthly paid on telecommunication services.