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Essentially, VoIP (Voice over Internet Protocol) converts voice into data, and sends it across the internet. At the remote end data is converted back into voice so a conversation takes place. As the calls are not going via the wired PSTN (Public Services Telephone Network) no call charges are incurred. IP keysets give users their phone extension on the central telephone system whilst at home, another office or elsewhere in the world. Softphones - virtual handsets - sit on the laptop providing users with direct communication to head office making mobile working easy. Link the telephone systems of satellite offices together on a voice network and the high volume of 'internal' calls become free of charge. SIP (Session Initiated Protocol) provides an alternative to analogue and ISDN trunk lines, allowing cheaper calls via the internet to organisations who may not even be on an IP system themselves. BT Century 21 Network is updating telephone exchanges across the nation to make successful internet telephony a mainstream reality. Our supported manufacturers offer IP solutions and Bureautech will advise you on all aspects of VoIP and SIP - from optimum system configurations to the several broadband and IT considerations.
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