 fixed path has sufficient capacity for the wireless traffic. Oth- erwise the scarce resources of the wireless path might not be used to its potential and the QoS might be affected. The SGSN MGW implements QoS handling and RAB map- ping. Fallback of QoS level is possible when roaming between UMTS and other mobile networks. See Figure 7.23. Service Implementation 'The most difficult part is not to migrate the technology but to migrate the minds of the users.' 8.1 OBJECTIVES The ideal vast and ambitious goal of this chapter is presented in the upper part of Figure 8.2. Please observe the word 'competitive'. Since this book is broad and context based, Chapter 8 can only cover a fraction of the overall answer to such a challenging goal. However, most other chapters are directly or indirectly supporting this chapter. Thus, Chapter 8 integrates findings in many of the previous chapters, exemplified by the following list: Chapter 1 - success-related inputs - main success factors are user related: applica- tion QoS (e2e, end-to-end), bandwidth, security (e2e), coverage (including roaming!), suitable devices, easy to use, affordable. Telecom business actor Roles End-user Business plan Identify Processes segments revenue Technical plans oppor- tunities Elaborate service plan Implement service Identify Service solutions Implement impleme- ntation infrastructure Network Chapter 8 Figure 8.1 Position of the chapter Understanding Changing Telecommunications - Building a Successful Telecom Business, by A. Olsson © 2003 Ericsson och Student litteratur. ISBN: 0-470-86851-1 Understanding Changing Telecommunications - Building a Successful Telecom Business Task: Create services and get them through to the receiver with QoS, security and at competitive cost Chapter 5 list of services Terminal Service network, if any Content Content Applications Service enablers Service enablers Network control and intelligence Access Core connectivity Figure 8.2 Task and goal for this chapter Consumers/Kill time Enterprise users/Save time Time-savin