The field of telecommunications is becoming ever more complex. Inorder to manage the new Telecom industry it is necessary not onlyto understand its 3 main components, namely the end users, thetechnology and networks, and the business aspects, but alsotheir vital inter-relationships.Complexity leads to uncertainty, and one effect of uncertainty isfor people to underestimate the complexity of the business and thetechnology. This book takes a holistic approach to the subject andcan be used as a tool for decreasing this uncertainty.