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The 4G standard actually specifies using VOIP for all calls - current 4G networks use what's known as Circuit Switch FallBack (CSFB), but the plan longer term i
by richardwhiuk 13y ago
The 4G standard actually specifies using VOIP for all calls - current 4G networks use what's known as Circuit Switch FallBack (CSFB), but the plan longer term is to move to VoLTE (Voice over LTE). See http://en.wikipedia.org/wiki/LTE#Voice_calls http://en.wikipedia.org/wiki/LTE#Voice_calls for more info.