The deployment of VoLTE can be the most challenging task since the introduction of GSM 25 years ago. VoLTE is too complex for a waterfall deployment approach; an iterative VoLTE project approach will reduce costs and timeline. Technology leadership should not be the motivation to invest in VoLTE. Drivers to introduce VoLTE should be spectrum refarming to LTE and 5G as well as decomisioning 2/3G. To minimize costs and complexity of the VoLTE solution, LTE coverage should be the same or bigger as 2/3G before VoLTE is introduced.
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