
| ICT Industry and Markets | ![]() | ![]() |
Page 68
of 73
pages. Chapter: 7: OLD Unit 3: Interconnection ![]() |
Importance of Interconnection In a competitive marketplace, there are a number of reasons why service providers need to interconnect with each other:
Thus, in the telecom industry, interconnection or e-commerce is not just a way to make business relations easier. It is, literally, the key to competition. Without those linkages, competition would simply not be possible. On a national level, interconnection is complicated enough, involving a tangled web of relationships among different types of providers. Interconnection on a global scale is further complicated by diverse languages, cultures, markets, regulatory environments, and technical idiosyncrasies. That's why the "technique" used to achieve interconnection is all-important. That technique becomes either the facilitator of or obstacle to competition and the spread of communications services around the world. Figure 3-1 below illustrates the answer to the problem of nationwide and global interconnection which has emerged in the form of the interconnection application service provider (ASP). The interconnection ASP serves as a centralized, automated clearinghouse for carrier communications and transactions. This type of electronic clearinghouse is a market-tested concept that has proven invaluable to other industries. For example, in the banking industry, it has accelerated and simplified the processing of billions of checks, which must be received from and routed to thousands of different banks. Similarly, in the telecom industry, service providers of all types and sizes need just one link into the clearinghouse, rather than multiple links to each of their trading partners. The clearinghouse or ASP receives all messages and order and pre-order information, automatically translates them to the right protocols, and directs them to the appropriate carriers. The business rules of all participating trading partners are programmed into the clearinghouse, where they are updated as soon as a carrier's issue changes. Service providers can access the ASP via traditional gateways or the Internet. There is nothing theoretical about this type of service. It is already operating in the United States, where it has made nationwide interconnection simple, efficient, and virtually error-free [1]. Figure 3-1: Interconnection Application Service Provider and the Trading Partners
The Strategy While there are regional variations in timetables, specific regulatory directives, and technological penetration, communications and interconnection around the world are, for the most part, being driven by four universal trends. Deregulation or Market Liberalization Countries on every continent are abandoning the old models in which communications were controlled by state-run monopolies. Instead, markets are being opened to competitive carriers—throughout Europe they are known as other licensed operators (OLOs)—and incumbents are being forced to modernize, compete for customers based on price and service quality, and grant network access to competitors. New Regulatory Mandates To support competition; voice, video, and data convergence; and broad access to advanced services, regulatory bodies are issuing mandates directing carriers to participate in number portability, carrier pre-selection, emergency services such as enhanced 911, and network unbundling—all of which require carrier-to-carrier interaction. Digital Subscriber Line (DSL) Explosion Skyrocketing demand for data and Internet access is a global phenomenon that is driving the adoption of DSL technology, which turns traditional voice networks into data highways. It has also spawned a new industry of data local-exchange carriers (DLECs)—another segment of competitors needing "last mile" access to end users. [1] Table 1: Installed Base of Access Network Lines (000s) for Beginning of Each Year Shown
Figure 3-2:
Proliferation of Players The telecom industry is no longer populated by a homogeneous community of voice carriers. Carriers today represent a mix of players that grows bigger and more diverse every day thanks to the demand for and advances in wireless technologies and data services. These drivers do not just make an airtight case for interconnection. But just as we have seen in the United States, they also make the case for an approach to interconnection that can handle a multitude of diverse players operating on national, regional, and global. Inter-operability Through interconnection, users can achieve interoperability of their applications. Interoperability has been defined as "the ability of two or more systems (such as devices, databases, networks, or technologies) to interact in concert with one another, in accordance with a prescribed method, to achieve a predictable result; the ability of diverse systems made by different vendors to communicate with each other so that users do not have to make major adjustments to account for differences in products or services; and compatibility among systems at specified levels of interaction, including physical compatibility." Interoperability allows heterogeneity of technologies while allowing users to work together (as the definition suggests). The difficulty of interoperability with respect to interconnection agreements is that different interconnection architectures may affect interoperability differently. The implication of the importance of interoperability is that interconnection agreements may be application driven. Therefore, when designing network protocols, engineers must consider the interoperability implications at the application layer. Furthermore, by taking an application view of interoperability, economists, who traditionally have looked at applications and their effect on economic measures such as productivity, may be able to study the cost and benefits of the Internet. The difficulty with designing interconnection agreements is that applications on the Internet are dynamic--new applications are constantly being developed. [Joseph P. Bailey, Economics and Internet Interconnection Agreements, Presented at MIT workshop on Internet Economics March 1995]
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() ![]() ![]() ![]() ![]() |