The Application And Implementation Of Inverse Multiplexing For ATM In Access Network

ATM (Asynchronous Transfer Mode) is a set of standards defined originally by the International Telecommunication Union, Telecommunications (ITU-T) for the B-ISDN (Broadband-Integrated Services Digital Network) . It attempts to support all types of service and multimedia application with a single , general transfer mode, and has the features like dynamic allocation of bandwidth, quality of service support, low time delay and high security guaranteed. So ATM is not only get popular in WAN (wide area network), but also has being employed in Access Network. Furthermore the inverse multiplexing for ATM (IMA) can break through the data rate bottleneck of the traditional ATM and provide a bandwidth scalable, economical and flexible way for accees network application, which is especially suit for corporation application.This paper discusses the fundamentals and advantages of the ATM and IMA in Access network applications at first, then combined with the practical engineering experience in myself at taking part in the project in our company, describes in detail how to design and implement IMA interface card for the DSLAM (Digital subscriber line access multiplexer), and the test methods and the test results in engineering application.