Voice and SMS in LTE

[husseinmanaf]

Introduction
For mobile network operators, voice and short message service (SMS) have consistently been major sources of revenue. Optimum support of these conventionally circuit switched services in data-oriented LTE (Long Term Evolution) is essential. This white paper summarizes the technology options for supporting voice and SMS in LTE, including circuit switched fallback (CSFB), SMS over SGs, and voice over LTE (VoLTE).

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