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:

Download 3GPP Decoder