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Friday, 13 February 2009

LTE UE Modes of Operation

From 3GPP TS 24.301, section 4.3:
UE mode of operation
A UE attached for EPS services may operate in one of the following operation modes:
- PS mode of operation: the UE registers only to EPS services;
- CS/PS mode 1 of operation: the UE is CS fallback capable and configured to use CS fallback, and non-EPS services are preferred. The UE registers to both EPS and non-EPS services; and
- CS/PS mode 2 of operation: the UE is CS fallback capable and configured to use CS fallback, and EPS services are preferred. The UE registers to both EPS and non-EPS services.

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