for wireless network infrastructure vendors, and wireless network operators, dyaptives dmts network tester for umts (hsdpa and hsupa), cdma (1xrtt & evdo), lte (long term evolution) radio access networks provides load and stress test solutions featuring channel emulation (rayleigh fading, multipath propagation, drive test, bulk call generation for end-to-end validation of a 3g and 4g wide-area wireless network (wan). in integration and verification labs, the dmts replaces existing phone-cabinets using a software-defined radio solution to generate millions of calls over an rf interface to the radio access network (ran, base station, bts, nodeb) replicating a city in your lab.