how to decode user-user information element

[Alessio82]

Hi all!
I work on a SIP gateway project. I have to develope CCBS QSIG supplementary service. I did the same thing with an Alcatel 4400 PBX using the Facility messages. I started using MD110 (I don't know which version) and I saw several User-User information elements. Here there are the traces of a call from MD110 to our Gateway:

PBX SETUP:RX
00 01 f8 34 08 02 6c ce 05 a1 04 03 80 90 a3 18 03 a1 83 8d 1c 28 91 aa 06 80 01 00 82 01 00 8b 01 00 a1 1a 02 01 01 06 04 2b 0c 09 00 80 0f 45 4c 53 41 47 20 53 45 43 55 52 49 54 59 20 1e 02 81 83 6c 02 01 81 70 05 81 37 30 39 38 7e 27 00 fe 55 01 00 59 01 00 b1 0c 09 09 81 31 30 36 33 31 35 36 0f 11 81 8e 80 45 4c 53 41 47 20 53 45 43 55 52 49 54 59 9c 31 01 80 9d 32 01 81
Sending_Complete:
Bearer_Capability: 80 90 A3
Channel_Identification: A1 83 8D
Facility: 91 AA 06 80 01 00 82 01 00 8B 01 00 A1 1A 02 01 01 06 04 2B 0C 09 00 80 0F 45 4C 53 41 47 20 53 45 43 55 52 49 54 59 20
Progress_Indicator: 81 83
Calling_Party_Num: 01 81 -
Called_Party_Num: 81 - 7098
User_User: 00 FE 55 01 00 59 01 00 B1 0C 09 09 81 31 30 36 33 31 35 36 0F 11 81 8E 80 45 4C 53 41 47 20 53 45 43 55 52 49 54 59 9c 31 01 80 9d 32 01 81


GTW CALL_PROCEEDING:TX
02 01 34 fa 08 02 ec ce 02 18 03 a9 83 8d
Channel_Identification: A9 83 8D

GTW ALERTING:TX
02 01 36 fa 08 02 ec ce 01

GTW PROGRESS:TX
02 01 38 fa 08 02 ec ce 03 1e 02 80 88
Progress_Indicator: 80 88

GTW DISCONNECT:TX
02 01 3a fa 08 02 ec ce 45 08 02 80 91
Cause: 80 91

PBX RELEASE:RX
00 01 fa 3c 08 02 6c ce 4d 08 02 81 91 7e 03 00 fe b1
Cause: 81 91
User_User: 00 FE B1

GTW RELEASE_COMP:TX
02 01 3c fc 08 02 ec ce 5a

PBX SETUP ON CHANNEL D:RX
00 01 fc 3e 08 02 6c d0 05 a1 04 02 a8 80 18 01 ac 1c 28 91 aa 06 80 01 00 82 01 00 8b 01 00 a1 1a 02 01 01 06 04 2b 0c 09 00 80 0f 45 4c 53 41 47 20 53 45 43 55 52 49 54 59 20 1e 02 81 83 6c 02 01 81 70 05 81 37 30 39 38 7e 26 00 fe b1 0c 09 09 81 31 30 36 33 31 35 36 0f 11 81 8e 80 45 4c 53 41 47 20 53 45 43 55 52 49 54 59 7f 02 00 80 90 9c 31 01 80
Sending_Complete:
Bearer_Capability: A8 80
Channel_Identification: AC
Facility: 91 AA 06 80 01 00 82 01 00 8B 01 00 A1 1A 02 01 01 06 04 2B 0C 09 00 80 0F 45 4C 53 41 47 20 53 45 43 55 52 49 54 59 20
Progress_Indicator: 81 83
Calling_Party_Num: 01 81 -
Called_Party_Num: 81 - 7098
User_User: 00 FE B1 0C 09 09 81 31 30 36 33 31 35 36 0F 11 81 8E 80 45 4C 53 41 47 20 53 45 43 55 52 49 54 59 7F 02 00 80 90 9c 31 01 80


Is there a way to decode these User-User messages? Could you suggest me anything?
Thanks in advance.

Alessio

 

[whosrdaddy]

SAM toolbox (costs money) has a tool called Signal trace interpreter which can be used to interpret IPLP/TLP65/SLP60 traces from the MD110. it also decodes most U-U messages.

/Daddy

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