Every day the number of tests and trials for UMTS in different parts of the world increases rapidly and UMTS is already active in some regions. It is, therefore, essential that network operators and equipment suppliers understand how to handle and analyse UMTS signaling procedures in order to get the network into operation as soon as possible. Fully revised and updated the Second edition of UMTS Signaling - UMTS Interfaces, Protocols, Message Flows and Procedures Analyzed and Explained: Includes new topics covering HSDPA/HSUPA, TDD and TD-SCDMA Chapter on Rel.5 and 6 has been brought up-to-date, and is followed by a new chapter on the future releases 7 and 8 Provides a deep insight into all aspects of UMTS signaling Comprehensively covers the wireline interfaces of UTRAN taking information from real UMTS traces Provides crucial information for network operators and equipment suppliers keen to understand how to handle and analyse UMTS signaling procedures in order to get the network into operation, detect errors and troubleshoot faults Uses first hand, real world information to explain issues which are unclear in the standards