Online 2G/GSM, 3G/UMTS, 4G/LTE Message Analyser

Welcome to CSN.1 and ASN.1 Message Analyser for 2G/GSM, 3G/UMTS, 4G/LTE standards. This WEB page provides online functionality to decode and encode the protocol stack messages between mobile station and network defined by 3GPP standard.

The decoder is a WEB based application for decoding and encoding protocol stack (2G / 3G / LTE) messages defined by 3GPP standard and encoded using ASN.1 algorithm.

Supported protocol stack layers:
  • GSM (2G) : RLC - Radio Link Control, MAC, RRC - Radio Resource Control
  • UMTS (3G) : RRC - Radio Resource Control
  • LTE (3.5G/4G) : RRC - Radio Resource Control

Features

  • Showing Hex and Binary representation of the message elements.
    For comfort of developers the decoder shows all parts of the message in Hex and Binary forms.
  • Better than Wireshark because
    Not only decoding of message PDU is possible, but also composing & editing. You can choose version of 3GPP to be used for decoding.

Product Benefits

  • saves your time;
  • reduces errors in manual decoding;
  • easy to use;
  • up to date with the latest 3GPP specifications.

Table of Supported Messages

Messages encoded in CSN-1

Technology Specification Releases
99, 4, 5, 6, 7, 8, 9, 10, 13
A
S
2G/GSM 3GPP TS 44.018,
RRC go
3GPP TS 44.060,
MAC/RLC go
3G/UMTS 3GPP TS 25.331,
RRC go
4G/LTE 3GPP TS 36.331,
E-UTRA go
N
A
S
3GPP TS 24.008 go
3GPP TS24.301 go
4G/LTE GAN / VoLGA go
* AS - Access Stratum, NAS - Non-access Stratum

Messages encoded in ASN.1

Technology Specification Releases
7, 8, 9, 10, 11, 12, 13
3G/UMTS/UTRAN 3GPP TS 25.413 RANAP,
3GPP TS 25.419 SABP,
3GPP TS 25.423 RNSAP,
3GPP TS 25.433 NBAP,
3GPP TS 25.453 PCAP,
3GPP TS 25.468 RUA,
3GPP TS 25.469 HNBAP







go
4G/LTE/E-UTRAN 3GPP TS 36.413 S1AP,
3GPP TS 36.423 X2AP,
3GPP TS 36.443 M2AP,
3GPP TS 36.444 M3AP



go

Decoding as Service:

M2M Web Service for automated decoding

A new Web Service is availabe now for automated decoding of the 3GPP air interface messages. It supports the CSN.1 and ASN.1 messages from 2G/GSM, 3G/UMTS, 4G/LTE defined by 3GPP standard (see full list of supported messages).

M2M automated decoding service