"This book practically demonstrates how IP and ATM technology can be applied to GPRS and UMTS Third Generation networks and provides implementation scenarios in the UMTS radio access networks. It covers real networking issues and how they may be resolved in the context of GPRS and UMTS (ATM AAL2 for transport of IP data (developed for UMTS), AAL2 signalling (developed for UMTS), IP in the RAN: CIP, LIPE, Running AAL2 over IP). UMTS signalling (with live UMTS network trace captures analysed) is explored in detail and has updated coverage right up to UMTS releases 5 and 6 · Introduction. · Principles of Communications . · GSM Fundamentals. · General Packet Radio System. · IP Applications for GPRS/UMTS. · Universal Mobile Telecommunications System. · UMTS Transmission Networks. · IP Telephony for UMTS Release 4. · Release 5 and Beyond (All-IP). "