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RTP on IPphone start 6 sec after the beginning of the call

Hi All,

I have a strange phenomenon on an IPphone,

When a call is initiated by a phone on SITE-A to an other phone on a different cluster  SITE-B trough a intercluster trunk,

the calling hear the caller 6 sec after the beginning of the call (hang-up of two IPphones).... ??!!! Why 6 seconds ??!!??

On the logs of the IPphone SITE-B, i have this,

NOT 18:42:24.287303 DSP: ====== A phone call starts ....

NOT 18:42:24.288127 DSP:  ETHSTAT-  (unicast, broadcast, multicast) rx  = 5397156, 420548, 63434; tx = 5472827, 2784

NOT 18:42:24.288578 DSP:  MIB2-  ipInDelivers= 5428853, udpInDG= 5129110, udpOutDG= 5105691, udpNoPort= 68994, udpInErr= 0, icmpInDestUnreach = 650, icmpOutDestUnreach = 1127

NOT 18:42:24.288976 DSP: STREAM- OpenEgressChan- ChanType 1, local (multicast host x0, port x0), MedType 12, Period 20, stream (46396907, 46396907)

NOT 18:42:24.289367 DSP: STREAM- OpenEgressChan --> local port x0, reserved port x0, Chan 0,

NOT 18:42:24.305838 DSP: STREAM- OpenIngressChan- ChanType 1, Remote (host xa967068, port x4974), medType 12, Period 20, VAD 0, TOS b8, stream (46396907, 46396907) --> chan 0

NOT 18:42:24.306287 DSP: STREAM- OpenIngressChan- dtmfpayloadtype 101

...

6 sec

...

NOT 18:42:30.763517 DSP: mtStartToneSource_ *** playing tone when audio path = NONE <== What is this line???

NOT 18:42:30.803514 DSP: STREAM- CloseEgressChan- ChanType 1, stream (46396907, 46396907) --> Chan 0

NOT 18:42:30.804512 DSP: RTP RX-- Channel 0, count = 295, discard = 1, lost = 0; Late 2, RTP TX-- count = 324, err = 0, VADenabled = 0

NOT 18:42:30.807690 DSP:  ETHSTAT-  (unicast, broadcast, multicast) rx  = 5397460, 420548, 63434; tx = 5473158, 2784

NOT 18:42:30.808988 DSP:  MIB2-  ipInDelivers= 5429157, udpInDG= 5129408, udpOutDG= 5106015, udpNoPort= 68994, udpInErr= 0, icmpInDestUnreach = 650, icmpOutDestUnreach = 1127

NOT 18:42:30.819387 DSP: STREAM- CloseIngressChan- ChanType 1, stream (46396907, 46396907) --> Chan 0

WRN 18:42:31.138679 JVM: Thread-3|cip.mmgr.do:? - [MediaMgrSM]: Unhandled Event, State = StateOnHook Event = EventSetSpeakerModeOff

WRN 18:42:31.142137 JVM: Thread-3|cip.mmgr.do:? - [MediaMgrSM]: Unhandled Event, State = StateOnHook Event = EventEndcall

WRN 18:42:31.569281 JVM: Thread-3|cip.mmgr.do:? - [MediaMgrSM]: Unhandled Event, State = StateHandsetOffHook Event = EventSetSpeakerMode

WRN 18:42:32.646808 JVM: Thread-3|cip.mmgr.do:? - [MediaMgrSM]: Unhandled Event, State = StateOnHook Event = EventSetSpeakerModeOff

WRN 18:42:32.648660 JVM: Thread-3|cip.mmgr.do:? - [MediaMgrSM]: Unhandled Event, State = StateOnHook Event = EventEndcall

WRN 18:42:34.996601 JVM: Thread-3|cip.mmgr.do:? - [MediaMgrSM]: Unhandled Event, State = StateHandsetOffHook Event = EventSetSpeakerMode

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RTP on IPphone start 6 sec after the beginning of the call

Do you have any firewall or similar device between sites ?

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