I am happy to announce the first version of 3GPP Decoder, a open source and free tool to decode LTE, UMTS and GSM messages and PDUs.

For the first version the following messages are supported:
GSM
GAN TCP
GAN UDP
GSM CCCH
GSM SACCH
LLC
NAS
SNDCP
SNDCPXID
UMTS
RLC-AM
RLC-UM
NAS
RRC BCCH.BCH
RRC BCCH.FACH
RRC DL.CCCH
RRC DL.DCCH
RRC DL.SHCCH
RRC MCCH
RRC MSCH
RRC PCCH
RRC UL.CCCH
RRC UL.DCCH
RRC UL.SHCCH
RRC SIs (SIBs and MIB)’
LTE
RRC BCCH.BCH
RRC BCCH.DL.SCH
RRC DL.CCCH
RRC DL.DCCH
RRC PCCH
RRC UL.CCCH
RRC UL.DCCH
NAS EPS
Download 3GPP Decoder Windows installer
You can also download/clone the source code of 3GPP Decoder from my GitHub page. https://github.com/panigrahip/3GPPDecoder
Add all your feature requests and issues here: https://github.com/panigrahip/3GPPDecoder/issues