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What is Understanding Circuit Switched Fallback about?

Circuit Switched Fallback (CSFB) allows LTE devices to receive voice and SMS services through circuit-switched networks. When a voice or SMS request occurs, the LTE network hands off the device to the circuit-switched network. 3GPP specifications define the CSFB mechanism. It involves the LTE, 2G/3G, MME, and MSC networks interacting to enable services and fall back between packet and circuit-switched domains for voice calls and SMS. Network architectures and call flows are described for mobile-originating

Author

Kudakwashe Mujuru

Language

EN