RRC
PDCP
3GPP - CDR
Transcoder free operation_ts_123153v080200p
TS-36.523-3
3GPP TS 36.331
ts_141101v051100p
ETSI TS 101 503 V8.10.0 (2001-06)
08.58
Ts 135202v070000p
GSM 3GPPNetwork architecture
Ts 136213v110000p
