3GPP message decoder is a very simple but powerful tool to decode GSM, UMTS, LTE, IP messages. This is developed by protocolanalyze. 3GPP decoder is a simple application using Wireshark to decode messages.
3GPP Message Decoder has a very simple interface.
The user interface has the following sections:
- Enter the HEX message to decode in the top text area.
- You can choose between GSM, WCDMA, LTE or IP Protocol.
- Use the dropdown to select between different message types to select.
- The decode button.
- Decoded message window
Message Type Supported
3GPP Message Decoder supports the following message types.
GSM
- GAN TCP
- GAN UDP
- GSM CCCH
- GSM SACCH
- LLC
- NAS
- SNDCP
- SNDCPXID
UMTS
- 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
IP Protocols
- ICMP
- IP
- RTSP
- RTP
- UDP
Decoding Message
After entering a correct hex string and choosing the appropriate option press the decode button to decode the message. You can copy (Ctrl A and Ctrl C) and paste (Ctrl V) the output result from the output window to a notepad or word processor.
Download 3GPP Message Decoder
Download 3GPP Message Decoder from the following link: