As wireless networks take ever-bigger bites out of the USD 350 billion dollar telephone market, they create their own performance problems. International customers require global networks; more customers mean bigger networks; new services create more complicated networks. Then there's changing out the network; each time a provider introduces a new technology or capability, it has to do so without interrupting service delivery to existing customers. Here is realistic advice on metrics, troubleshooting methods, design guidelines, revenue assurance and more, from a team that has performed the same services for AT&T Wireless, Nextel and Verizon.