Combiner box for multiple telephone systems

Abstract

This report presents a new product for use within a multi networked PSTN environment. The telephone combiner box is designed to create an interface and provide a replacement to multiple subscriber end telephone sets within a multi networked environment. The hardware is based on legacy analog telephony standards in a bid to provide security in form of network isolation and independence between different telephone networks. It merely provides an interface to subscribers as opposed to integrating several lines onto one using multiplexing. The project is intended to provide a replacement to multiple telephones in a low or mid tier office and may also provide a cost effective alternative to digital PABX which are installed for the purpose of integrating several lines. The combiner box is able to facilitate an office environment with multi networkor same network subscriber terminals. The design is modular and can be increased subject to restrictions placed by the controller input and output.