As is known to all, the business activities of an enterprise largely depends on the modern methods of communication, telephone, fax, data exchange, the exchange of information, is the fundamental guarantee of enterprise survival and development, at the same time, the heavy use of these devices bring the burden, increase the management cost, especially the big international group, the big enterprise also pay a lot of money consumption, VOIP technology is with the development of interconnection network technology and grows, is worked out by the cisco a technology, it USES support voice technology for network devices, voice and data transmission, let voice can better transmission on the Internet, because this technology greatly reduces the cost, brought a strong impact on the traditional industry, at the same time also brought new business opportunities,
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