October 19, 2005
IPv6
VoIP networks are increasingly being used by companies to avail enhanced functionalities such as unified messaging and increased mobility and savings on international calls. VoIP is being used for managing virtual contact centers as well.
However, the growth of VoIP is limited by the absence of inbuilt QoS in the IP networks that prevents it from offering levels of service that would be acceptable to the industry. The transfer of VoIP packets over firewalls is hampered due to network address translation (NAT) and protocol considerations. This issue, along with eavesdropping concerns, is being considered in the development of the new generation of VoIP networks. These networks will be based on IPv6 and will concentrate on providing scalability and industry-level reliability. This would enable VoIP networks to achieve the end-to-end interworking any time and any place, which is not possible currently.
IPv6 aims to offer a better solution to the NAT-related problems as compared to the NAT-based accommodation, which is the currently used solution. The complexity and cost overheads of the Internet and its applications increase due to NAT techniques.
IPv6 will facilitate expanded addressing, autoconfiguration, multicast, QoS, etc. IPv6 will also enable a more efficient use of IP addresses by creating a new format for the addresses. The addresses will be of 128-bit each and there will be approximately 3.4 x 10 raised to 38 addresses.
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