Glossary


CSFB

Circuit Switched FallBack. CSFB in the Evolved Packet System (EPS) enables the provisioning of voice and other CS-domain services by reuse of GSM/EDGE Radio Access Network (GERAN) or UTRAN CS infrastructure when the UE is served by E-UTRAN. This function is only available if E-UTRAN coverage is overlapped by GERAN or UTRAN coverage.