Data (packet) switching and routeing
In this chapter we looked at the variety of packet technologies providing the wide range of data services used by both business and residential customers. After considering the differences between voice and data services, we then noted that several packet systems are capable of providing voice switching. We looked at ATM in detail, noting that the VPs established enabled the QoS offered to customers to be predicted and assured. However, the main focus of the rest of the chapter addressed the various aspects of IP and why it has proved to be ubiquitous and popular as a network service as well as the main interface to user computer applications. Consideration of the Internet provided an insight into the applicability of IP and, with the advent of the WWW, the massive impact on everyday life at work and home.
Data (packet) switching and routeing, Page 1 of 2
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