Events: GSM A 

16:26:12/007.3 2- TS D4 GSMA  BSSMAP  CIPHER MODE COMMAND          
                        IE:(07) len:2 >> Layer 3 header information
                          06 00
                        IE:(0a) len:9 >> Encryption information
                          01 2b c5 a2 5f 2f 85 6c 00
16:26:12/194.8 2- RS D4 GSMA  BSSMAP  CIPHER MODE COMPLETE        
16:26:12/257.3 2- TS D4 GSMA  DTAP DLCI:0 SN:0 MM/TMSI REALLOC COMMAND  
                        IE:(13) len:5 >> Location area identification
                          02 f8 10 22 00
                        IE:(15) len:5 >> Mobile identity
                          Oct 3 : ----0--- Even number
                                  -----100 Type= TMSI
                          Oct 4 : ******** Identity= ed8077
16:26:12/896.3 2- RS D4 GSMA  DTAP DLCI:0 SN:0 MM/TMSI REALLOC COMPLETE 
16:26:12/958.4 2- TS D4 GSMA  DTAP DLCI:0 SN:0 MM/LOCATION UPDATING ACC 
                        IE:(13) len:5 >> Location area identification
                          02 f8 10 22 00
16:26:13/020.4 2- TS D4 GSMA  BSSMAP  CLEAR COMMAND               
                        IE:(07) len:2 >> Layer 3 header information
                          06 00
                        IE:(04) len:1 >> Cause
                          09
16:26:15/833.3 2- RS D4 GSMA  BSSMAP  CLEAR COMPLETE              
16:26:34/603.4 2- RS D4 GSMA  BSSMAP  COMPLETE LAYER 3 INFORMATION
                        IE:(05) len:5 >> Cell identifier
                          01 22 00 04 a3
                        IE:(17) len:12 >> Layer 3 information
                          05 24 41 02 01 00 05 f4 00 ed 80 77

Decoding generates one or more lines in the format:

GSMA RSTYPE TYPE
ctrl-field

With the following representations:

• RSTYPE: Radio sub-system type:
  
  
  • BSSMAP: Basic Sub System Management
    
  • DTAP: Direct Transfer
    
    
• TYPE: message type

The control fields are comprised of IE's; each IE is decoded according to two formats:

• Identified format:

  IE:(xx) len:y >> designation
  value

With the following representations:

• xx: Value in hexadecimal of the IE code.
  
• len:y Length of IE content (after 2 IE header octets).
  
• designation: IE standardized designation.
  
• value: IE contents in hexadecimal.

• Detailed format:

  IE:(xx) len:y >> designation
  octet 3 : b7-b0 designation
  octet 4 : b7-b0 designation
  ...

With the following representations:

• xx: Hexadecimal value of the IE code.
  
• len:y: Length of IE content (after 2 IE header octets).
  
• designation: Standardized IE designation.
  
• octet i: Row of bits in the IE.
  
• b7-b0: High-order bits for the sub-field with designation.

When IE's do not have decoding corresponding to the detailed format, they are displayed in identified mode.

Standards

GSM 08-08

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