This book gives an excellent overview of the way 3G networks are operating: air interface, radio access and core elements. It compiles and represents in readable form various IETF RFC and 3GPP documents. For my daily work I would appreciate more details on all-IP UMTS (the book ends with UMTS release 5), MEF backhaul, IpSec and packet core elements. I would trade extensive coverage of ATM, GPRS legacy and barely readable network captures for that. I hope a second edition with more contemporary subheading "IP, MEF, LTE and NGMN" is already in authors' pipeline. I'm on a waiting list...