lecture note

IT Report
Forrester Research
Gartner Report

IMS (IP multimedia Subsystem)

Wi-Fi VS HSDPA

similar : handover, multimedia(<5Mbps), 3~5m, Qos
difference : physical, initial cost(infrastructure), TCO(total cost ownership)

handover(without disconnection)

Wi-Fi, contention base, no QoS, data communication

Vioce(delay must < 250ms)


presentation 1
Feedback from the auditor.