Ở đâu ATM sử dụng Hôm nay Chương này trình bày các ứng dụng ATM được sử dụng phổ biến nhất. Nó xác định phân khúc thị trường cũng như các nhà khai thác sử dụng ATM cơ sở hạ tầng. Chương này cung cấp thông tin cơ bản đề cập đến việc truyền tải gói tin IP trên các mạng ATM. Nó cũng bao gồm một số các máy ATM và các khía cạnh ảnh hưởng lẫn nhau Frame Relay. Cuối cùng, người đọc được giới thiệu ngắn các giải pháp khác nhau để truyền các dịch vụ thoại sử. | Chapter 6 Where is ATM Used Today This chapter presents the most commonly used ATM applications. It identifies market segments as well as operators using ATM infrastructure. The chapter provides basic information referring to the transmission of IP packet over ATM networks. It also covers some of the ATM and Frame Relay interworking aspects. Finally the reader is given the short introduction to different solutions for transmission of voice services using ATM infrastructure Over last ten years a number of new technologies have become commercially available. The developments in transmission technologies such as the ability to transmit data at different wavelengths DWDM combined with the introduction of techniques such as Gigabit and 10Gbit Ethernet changed the market situation. Additionally the advent of MPLS and advances in QoS based routing in IP network highly influenced the position of ATM. In the public network segment ATM is important for services delivery service aggregation and transport. It is a well-defined worldwide standard that has been widely deployed because it works and it is not only for data. This technology is embedded into carrier edge and backbone infrastructures to support enterprise-class applications with high reliability. In fact reliability is the key ATM advantage when compared to all-IP based solutions. Despite the fact that some ISPs and data-only carriers treat ATM as a data transport solution ATM is actively used to provision voice and TDM services and handles a significant amount of frame relay and IP services traffic. It is also the primary technology used for DSL traffic aggregation and is 93 ATM Basics used to feed traffic into other service backbones like PON Passive Optical Network . On the other hand ATM has clearly received a more favorable reception in service provider networks where its first mission was to provide a scalable core for fast-growing frame relay networks. Large carriers are looking for solutions that let them .
