Ts 135202v070000p
GSM 3GPPNetwork architecture
Ts 133402v110400p-SAE Non 3GPP Access Security
LTE UMTS NW Architechture
ts_124301v120800p-NAS_Protocol
ts_102222v060500p
3GPP_TS_23_272_LTE
[14] 3GPP TS 32.421 - Subscriber and Equipment Trace
ts_133102v070100p
ETSI TS 129 215
23.002 UMTS - Network Architecture
ts_123003v091500p.pdf
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