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Voip Essay

2720 words - 11 pages

CONTENTS
Page
I. INTRODUCTION. ......................................................................................... 1
II. CONVERGENCE OF TELEPHONY NETWORKS WITH DATA 3
NETWORKS AND THE EMERGENCE OF VOICE OVER INTERNET 5
PROTOCOL TECHNOLOGIES...................................................................
III. ADVANTAGES AND POSSIBLE DISADVANTAGES OF VOICE
OVER INTERNET PROTOCOL TECHNOLOGIES ...............................
IV. ...view middle of the document...

The review covers the telecommunication operations and practice of most of the participating organizations of JIU; the use of new telecommunication technologies, especially VoIP technologies; and the procurement of telecommunication services and equipment.
Telephony is an important tool in any organization. The Inspectors note that the current systems providing telephony services to the United Nations in many duty stations, including the United Nations Headquarters complex (installed in 1986), United Nations Office at Nairobi (UNON), United Nations Office on Drugs and Crime (UNODC), the United Nations Economic Commission for Latin America and the Caribbean (ECLAC), the United Nations Economic and Social Commission for Western Asia (ESCWA), and the United Nations Economic and Social Commission for Asia and the Pacific (ESCAP), have reached their end-of-life and need to be replaced with a modern, reliable and cost-effective telephony system at the most opportune time. Other organizations in the United Nations system are also facing the same situation. In addition, to run a reliable and quality telephony service, including voice, videoconference, cable, fax, etc., requires substantial, continuous capital investment and operational support costs, in addition to the costs charged by telecommunications companies for actual call duration. For the United Nations Headquarters complex alone, a total of US$ 8.55 million is incurred annually for telephony-related costs, including technical support staffing costs (US$ 0.7 million), capital investments (US$ 4.7 million) and non-staff operating costs (US$ 3.15 million). It is against this background of “time for change” that the Inspectors carried out this review.

II. CONVERGENCE OF TELEPHONY NETWORKS WITH DATA NETWORKS AND THE EMERGENCE OF VOICE OVER INTERNET PROTOCOL TECHNOLOGIES
Voice over Internet protocol (VoIP), also called Internet protocol (IP) telephony, Internet telephony, broadband telephony, broadband phone and voice over broadband, is a technology that breaks down voice signals into digital packets that can be sent using standard Internet protocol over the Internet or through any other IP-based network. Its use is widespread for backbone (wholesale) transmission of voice traffic by telecommunications operators. There is also significant use on private premises, in particular to replace old private branch exchanges (PBXs).
According to “The Essential Report on IP Telephony”, “telephony networks have in the course of time undergone major evolutionary changes, driven essentially by technological progress in various fields (switching, transmission, access and maintenance). The latest such change is digitization of their transport technology, which has had a considerable integrating influence. Still, the end purpose of a telephone network was always associated with the provision of a universal communication service with a certain...

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