DESIGN AND IMPLEMENTATION OF A SOFTWARE INTERCOM ON LAN
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DESIGN AND IMPLEMENTATION OF A SOFTWARE INTERCOM ON LAN
Chapter One: Introduction
The importance of having information available at the touch of a button, especially in a developing economy, cannot be overstated, as telecommunications has long been the backbone of most businesses and organisations’ day-to-day operations. As a result, there is a need to seek out new alternatives to make it more inexpensive.
Currently, digital technology is the foundation of the entire information sector. As part of this, the conversion of auditory information into digital signals is now a standard procedure that is built into our phones, digital networks, televisions, and music players.
Voice communication has traditionally been delivered over specialised telephone networks run by telecommunications service providers such as Nigerian Telecommunications Limited (NITEL), Globacom Nigeria Limited (GLO-MOBILE), and others in Nigeria. These telephone networks have progressed from the earliest analogue circuits to the modern digital networks with bandwidths exceeding 1 Gbps.
Different services are delivered on distinct networks to account for differing bandwidth and networking requirements. As their names suggest, telegraph networks, telex networks, telephone networks, facsimile networks, cable networks, and data networks all support diverse services.
These networks have qualities that met the unique needs of the service they offered. For example, the voice network would enable bandwidths of 64 Kbps for voice communication, ensuring Telco-grade voice transmission with low jitter and echo cancellation [1][2]. Similarly, cable networks would offer increased capacity and better quality of service (QoS) for video transmission.
However, the bandwidth and QoS requirements of data communication networks are quite flexible. For the majority of data communication applications, dependability is crucial, therefore delivery methods would include systems for error checking, acknowledgment, retransmissions, and sequencing.
However, for real-time applications such as voice communications, retransmitting a lost packet for playback at the receiving end makes little sense if it is out of sequence and significantly delayed. The essential issue to note is that these networks have different underlying architectures and communication protocols.
Networks are being explored to their full potential as a result of the massive rise of digital networks, which represent the marriage of two technologies: telecommunications and computing.
Existing networks can be used optimally with minimal additional expense by incorporating capabilities such as video conferencing and mail serving into the network, which saves money and allows for simpler access to remote databases and programmes.
Integrating various networks into a single integrated network, where all services use common facilities, is a technological challenge [3][4].
As a result, this project is intended to provide a service that transmits both speech and video across a data network, rather than having specialised voice and cable networks for solely voice or video communication.
The benefits of having an all-purpose network over dedicated networks are cost reduction, simplification, and consolidation.
The adoption of software-based intercom eliminates the need for expensive PABX and telephone handsets, as the only hardware needs are headsets and networked PCs.
Furthermore, with the predominance of Internet Protocol (IP) nodes and an abundance of IP-based switches and routers, communication may extend beyond LAN to encompass Wide Area Networks (WAN), lowering the cost of long-distance calls. Furthermore, the project will provide significant benefits in terms of simplified installation and maintenance.
The primary goal of this concept is to provide a LAN-based software intercom in which anyone on the network can dial a peer who is logged into the same network. This is an intercom without the PABX or pricey handsets.
Another goal of the software intercom is to enable visual peer-to-peer conferencing, which allows two or more clients to see each other in real time via webcams or other video capture devices attached to their computers.
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