[Asterisk-video] H324M handshake fails (sometimes)

[Dan Julius]

Hi,

I've been experiencing similar behavior as well. I've noticed that some
phone models do better than others.
The Nokia N95 works 100% while the Samsung Z720 is about 30% success rate.

I was wondering if you have made any progress?

Dan

On Mon, Aug 4, 2008 at 7:25 AM, Low Yu Siang <yusiang at yahoo.com> wrote:

> My asterisk server was accepting video calls without any problem. But
> recently it started to have some problems when accepting incoming video
> calls. The failed calls are around 30-50% of the calls. From the h245.log,
> it seems that in the failed calls, the phone never respond to
> MasterSlaveDetermination request. Is it possible that my isdn provider has
> just changed something on their side? Though I read that the echo
> cancellation issue only affects outgoing calls. My h245.log as below:-
>
> -Init call
> -Sending
> request terminalCapabilitySet {
>        sequenceNumber = 1
>        protocolIdentifier = 0.0.8.245.0.8
>        multiplexCapability = h223Capability {
>          transportWithI_frames = FALSE
>          videoWithAL1 = FALSE
>          videoWithAL2 = TRUE
>          videoWithAL3 = FALSE
>          audioWithAL1 = FALSE
>          audioWithAL2 = TRUE
>          audioWithAL3 = FALSE
>          dataWithAL1 = FALSE
>          dataWithAL2 = FALSE
>          dataWithAL3 = FALSE
>          maximumAl2SDUSize = 1120
>          maximumAl3SDUSize = 1120
>          maximumDelayJitter = 0
>          h223MultiplexTableCapability = basic <<null>>
>          maxMUXPDUSizeCapability = FALSE
>          nsrpSupport = TRUE
>          mobileOperationTransmitCapability = {
>            modeChangeCapability = FALSE
>            h223AnnexA = FALSE
>            h223AnnexADoubleFlag = FALSE
>            h223AnnexB = TRUE
>            h223AnnexBwithHeader = FALSE
>          }
>        }
>        capabilityTable = 4 entries {
>          [0]={
>            capabilityTableEntryNumber = 1
>            capability = receiveAndTransmitVideoCapability
> h263VideoCapability {
>              qcifMPI = 2
>              maxBitRate = 520
>              unrestrictedVector = FALSE
>              arithmeticCoding = FALSE
>              advancedPrediction = FALSE
>              pbFrames = FALSE
>              temporalSpatialTradeOffCapability = FALSE
>              errorCompensation = FALSE
>            }
>          }
>          [1]={
>            capabilityTableEntryNumber = 2
>            capability = receiveAndTransmitAudioCapability
> genericAudioCapability {
>              capabilityIdentifier = standard 0.0.8.245.1.1.1
>              maxBitRate = 122
>              collapsing = 1 entries {
>                [0]={
>                  parameterIdentifier = standard 0
>                  parameterValue = unsignedMin 1
>                }
>              }
>            }
>          }
>          [2]={
>            capabilityTableEntryNumber = 3
>            capability = receiveAndTransmitAudioCapability g7231 {
>              maxAl_sduAudioFrames = 1
>              silenceSuppression = TRUE
>            }
>          }
>          [3]={
>            capabilityTableEntryNumber = 4
>            capability = receiveAndTransmitUserInputCapability iA5String
> <<null>>
>          }
>        }
>        capabilityDescriptors = 1 entries {
>          [0]={
>            capabilityDescriptorNumber = 1
>            simultaneousCapabilities = 2 entries {
>              [0]=1 entries {
>                [0]=1
>              }
>              [1]=2 entries {
>                [0]=2
>                [1]=3
>              }
>            }
>          }
>        }
>      }
>
>
>
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