subject: Iptv?? You Should Run In The Special Online Or On The Internet? [print this page] Misreading IP? We have seen that the homogenization of competition in telecommunications services, making telecom services market is rapidly saturated. Driven through the capital in expansion of the development of the good old days, many struggling telecom companies. In order to survive in recent years, telecom M & A market has intensified. From last year's U.S. telecom giant AT & T, Bell finally fell into a small bag, to the recent Asian telecom giant PCCW sale of all telecommunications assets, are typical examples. In the telecom operation, the telecom equipment manufacturers have begun a second restructuring, reflecting the homogeneity of the telecommunications equipment market competitive level. We can not see any operators and equipment manufacturers means that the competitiveness of the restructuring of the adjustment of losses before reorganization, restructuring costs and restructuring after the layoffs, the entire telecom operation and future development of the telecommunications equipment manufacturing industry will How much damage.
Comprehensive restructuring the telecommunications industry, seems to be the result of a common answer. But the transition is moving toward still full of controversy. In fact, no matter where the transition to the communications infrastructure remains a basic resource for telecom operators. If you continue to maintain this infrastructure, the complexity and cost characteristics of the past, any transformation of the results are conceivable. So, over the years as a static resource reuse-based network architecture must make significant changes, the telecommunications sector needs in the network hierarchy and centralized operational control outside the telecommunications network service nodes seeking to improve homogeneity and complexity of the way out.
In fact, IP network technology, telecommunications infrastructure development has pointed out way out. Telecom operators have long begun to use IP technology to provide Internet access service network data. The global Internet network is by means of the transmission network carrier interconnection. However, almost all operators that, relative to the fixed telephone services and mobile telephone services, Internet data access is a high input, low-return business. It is often said, the investment data services accounted for 80% of operators of investment, but only 20% of revenue. Moreover, if the phone rates calculated per kHz bandwidth, the revenue per minute, broadband data access business unit resources to yield less than the thousandth!
Why IP technology for the Internet information service industry, with tremendous benefits, while filling the transmission and access services to provide basic telecom operators retreated to the edge of the value chain? We can see from many articles, the first telecom operators in the Internet industry chain has been the only orientation in the provision of telecommunications networks, data communication services delivery services. In other words, the use of the transmission network carriers carrying IP packets. During this period, telecom operators do not exist in the IP communications network technology. Decision-making in the telecom operators provide services using IP technology, they began the development of Internet portals, call soft switching, multimedia conferencing services and more service next generation network NGN IMS-long journey. In these services, consisting of a series of IP network routers, it appears to be seen as a new transport layer above the layer of packet-switched network, the network's functionality is naturally equivalent to the traditional telecommunications network architecture in exchange layer network. We therefore believe that the development in the IP layer on top of business must control and information storage, and all of the information exchange, should be resolved in the IP layer. The advantages of IP networks, it is reflected in its structure to achieve a very simple exchange of multimedia services, and support the separation of load and exchange, exchange and business separation. The concept of network-based level, and even has become a recognized telecom NGN architecture guidelines.
Recognized norms of these constraints, there were many new problems and subsequent solutions. One of the most typical IP-based network of business than the quality (QoS) issues. Since the levels are independent of, the basic principles of IP exchange doomed it can not completely protect the transmission of multimedia services with different quality. To compensate for this lack of resources, similar to ATM end RSVP reservation technology, forwarding nodes in the classification of business priorities to achieve control of the DiffServ technology exchange until the following increase in the IP layer of a support segment virtual routing layer MPLS technology, are the vigorous development. However, stir-fried in the media after a while, these technologies in the end realized the scale of the network so far can not be determined. Other than cost, the use of these technologies for network operators to bring what, how simple operations of this network of Internet information and communication services on the competition, I am afraid that no one can say that clearly.
Now appears that even with IP technology, as long as the continued use of the network hierarchy and the concept of centralized control of the business structure to support an open telecommunications network, and is sure to encounter the same problems of traditional networks. If the layered structure of the traditional network can solve a single communications business needs, but on the IP network layer is the quality of even the basic voice service needs of the total. If so, since many carriers are still on the provision of telecommunications services using IP technology skepticism is entirely justified.
Is worth mentioning that many people in the telecommunications industry such layered network architecture, and OSI's open architecture interconnection models is equivalent to seven up. Years ago, ITU-T experts tried to find ATM switching network and seven protocols, and finally concluded that the ATM switching layer is in the data link layer seven protocol functions, and ATM adaptation layer is equivalent to seven network layer protocol functions. It now appears that this is actually a very forced explanation. This view, is that for the layered network to look for more theoretical basis for it.
In some speech I have had some such title: "Skype, let the experts stunned", "P2P overlapping terms, so that the network business developers wake up." This is not sensational.
Internet service has proven, centralized service system will be replaced by a distributed service system. Similarly, the hierarchical network has already a notion of the past, should not be providing services based on the premise of IP technology. Architecture of the traditional telecommunications services move to IP "network switching layer" on a major misunderstanding.
Then, IP technology in the end mean?
My answer is, IP is based on the business differential, thereby reducing the coupling of a business network technology. Business here, including the coupling of different business and operational capacity of the associated network node, and network service node
Iptv?? You Should Run In The Special Online Or On The Internet?
