Ethereal-users: [Ethereal-users] H225 Decode Problem

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From: "Keith A French" <keithfrench@xxxxxxxxxxxxx>
Date: Sat, 14 Aug 2004 15:27:29 +0100
With Ethereal V0.10.6 and other recent versions, when I load an H225 & RTP trace, parts of the decode to not seem to be understood. For instance whenever an H.225 Call Setup packet occurs, the summary window shows:-
 
"H.225.0  CS: setup OpenLogicalChannel [UNKNOWN PER: Unrecognized H.450.x operation][Unreassembled Packet]"
 
In the Protocol Tree window the unreassembled packet is to do with H.4501:-
 
"            h4501SupplementaryService
                Item 0
                    H.450.1
                        SupplementaryService
                            NetworkFacilityExtension
                                EntityType
                                    EntityType: endpoint (0)
                                EntityType
                                    EntityType: anyEntity (1)
                            InterpretationApdu
                                InterpretationApdu: discardAnyUnrecognizedInvokePdu (0)
                            ServiceApdus
                                ServiceApdus: rosApdus (0)
                                    rosApdus
                                        Item 0
                                            ROS
                                                ROS: invoke (1)
                                                    Invoke
                                                        invokeId: 1
                                                        Opcode
                                                            opcode: global (1)
                                                                global: 1.2.826.0.1.1907195.1
                                                        something unknown here [Unrecognized H.450.x operation]
[Unreassembled Packet: H4501]"
 
 
The same problem exists with all other H.225 packets (e.g. Call proceeding, Alerting, Connect & Release Complete etc). Please can anyone help with this?
 
 
 

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