Quick Start

How to use the Decoder/Encoder?

When you want to analyse & edit a message PDU:

  1. Select a necessary protocol type:
  2. On the displayed page select message type, 3gpp release etc., enter the message PDU and push [Parse] button. Result of decoding will be displayed.
  3. When you click on a parameter value on the result page, a dialog box for the parameter value change will be displayed. Here you can edit the message PDU.

When you want to compose a message PDU from start

  1. In step 2 above push [Parse] button without entering PDU (message content). In case of UTRAN/E-UTRAN RRC, the message analysis result with PDU:0000... will be displayed. For other protocols a message selection dialog box will be displayed.
  2. In the message selection dialog box select the type of the message to be composed and push [Compose] button. A message analysis result with minimal necessary PDU content will be displayed.

How to create a new message

Select which message you want to create:
UTRAN RRC , E-UTRAN RRC , NAS , GERAN RRC , GERAN RLC/MAC , GAN / VoLGA , UTRAN RANAP/SABP/RNSAP/NBAP/PCAP/RUA/HNBAP , E-UTRAN S1AP/X2AP/M2AP/M3AP

A new window will open. Leave the PDU field empty and click "Parse" button.

Create new message GSM 2G, UMTS 3G, LTE 4G

Default message content will be shown in a new window.
You can change the values of Information Elements by clicking the links.

Create new message GSM 2G, UMTS 3G, LTE 4G

How to decode a message

Select which message you want to decode:
UTRAN RRC , E-UTRAN RRC , NAS , GERAN RRC , GERAN RLC/MAC , GAN / VoLGA , UTRAN RANAP/SABP/RNSAP/NBAP/PCAP/RUA/HNBAP , E-UTRAN S1AP/X2AP/M2AP/M3AP

A new window will open. Enter the message PDU and click "Parse" button.

Create new message GSM 2G, UMTS 3G, LTE 4G

A new window will open with decoding results.
You can change the values of Information Elements by clicking the links.

Create new message GSM 2G, UMTS 3G, LTE 4G