[Asterisk-video] call handshake fails

Fri May 9 06:55:50 CDT 2008

Hi,

I have the following scenario:
1. Asterisk sends masterSlaveDetermination to mobile phone
2. Mobile phone responds with masterSlaveDeterminationAck

This happens before the phone sends a masterSlaveDetermination.
I cannot see in the logs that Asterisk then responds with another
masterSlaveDeterminationAck.

Could this be the problem?

If the problem is due to ISDN provider echo cancellation - is there anything
that I can do about it?

Thanks,
Dan

On Fri, May 9, 2008 at 2:07 PM, Dan Julius <dan.julius at gmail.com> wrote:

> Hi,
>
> Attached are logs for a call that failed. After answering the call on the
> mobile device, X-Lite continues to ring and nothing happens.
> As for video in working calls - the problem is with video from H324M to
> SIP. Any ideas how to debug this?
>
> Can you provide a sample for using app_transcoder?
>
> Thanks,
> Dan
>
>
>
> On Fri, May 9, 2008 at 1:27 PM, Sergio Garcia Murillo <
> sergio.garcia at fontventa.com> wrote:
>
>> Could you send me a file with the h245 and h223 logs? (enable them by
>> h324m debug level 4)
>>
>> The most probable cause is that you isdn provider is doing echo
>> cancelation on the line, it usually causes random problems like this.
>>
>> The problem with video from SIP->H324M is that it has to be h263 QCIF at
>> maximun 52 kbs, if your videophone is not able to set this up, you'll need
>> to use the app_transcoder module.
>>
>> Best regards
>> Sergio
>>
>> ----- Original Message -----
>> From: Dan Julius [mailto:dan.julius at gmail.com]
>> To: asterisk-video at lists.digium.com
>> Sent: Fri, 9 May 2008 12:25:17 +0300
>> Subject: Re: [Asterisk-video] call handshake fails
>>
>> Further info:
>>
>> - In the failed calls, the mobile phone never sends a
>> masterSlaveDetermination packet (according to the h223 logs)
>> - Asterisk sends the terminalCapabilitiesSet, masterSlaveDetermination and
>> then continues to send OpenLogicalChannels.
>>
>> Is it OK to send OpenLogicalChannel before receiving a
>> masterSlaveDetermination?
>>
>> Thanks,
>> Dan
>>
>> On Fri, May 9, 2008 at 2:25 AM, Dan Julius <dan.julius at gmail.com> wrote:
>>
>> > Hi, Everybody,
>> >
>> > I'm new to this project, so  I apologize if  my questions might have
>> > already been answered elsewhere.
>> > I am using a X-Lite, Asterisk 1.4.19, a Digium TE122 card, and a Samsung
>> > Z720 phone.
>> >
>> > So far I have been able to make SIP-h234m calls (originating at either
>> > side) with only partial success.
>> > - I only get video in one direction, from SIP to H324M. I've read the
>> posts
>> > stating that SIP->H324m is actually more problematic, so I'm quite
>> puzzled
>> > about this.
>> > - About 33% of the calls fail to negotiate a video connection. After
>> > answering the call, nothing happens until I disconnect.
>> > The out-bound h223 log of a failed call is below. Does this log indicate
>> > that Asterisk is sending terminalCapabilitySet multiple times until it
>> is
>> > acknowledged?
>> >
>> > 1   0.000000      1.1.1.1 -> 2.2.2.2      H.245 terminalCapabilitySet
>> > terminalCapabilitySet terminalCapabilitySet terminalCapabilitySet
>> > terminalCapabilitySet terminalCapabilitySet terminalCapabilitySet
>> > terminalCapabilitySet terminalCapabilitySet terminalCapabilitySet
>> > masterSlaveDetermination masterSlaveDetermination
>> masterSlaveDetermination
>> > masterSlaveDetermination masterSlaveDetermination
>> masterSlaveDetermination
>> > masterSlaveDetermination masterSlaveDetermination
>> masterSlaveDetermination
>> > masterSlaveDetermination masterSlaveDetermination
>> masterSlaveDetermination
>> > masterSlaveDetermination masterSlaveDetermination
>> masterSlaveDetermination
>> >   2   0.000001      1.1.1.1 -> 2.2.2.2      H.245 openLogicalChannel
>> > (generic) openLogicalChannel (generic) openLogicalChannel (generic)
>> > openLogicalChannel (generic) openLogicalChannel (generic)
>> openLogicalChannel
>> > (generic) openLogicalChannel (generic) openLogicalChannel (generic)
>> > openLogicalChannel (generic) openLogicalChannel (generic)
>> openLogicalChannel
>> > (generic) openLogicalChannel (generic) openLogicalChannel (generic)
>> > openLogicalChannel (h263VideoCapability) openLogicalChannel
>> > (h263VideoCapability) openLogicalChannel (h263VideoCapability)
>> > openLogicalChannel (h263VideoCapability) openLogicalChannel
>> > (h263VideoCapability) openLogicalChannel (h263VideoCapability)
>> > openLogicalChannel (h263VideoCapability) openLogicalChannel
>> > (h263VideoCapability) openLogicalChannel (h263VideoCapability)
>> > openLogicalChannel (h263VideoCapability) openLogicalChannel
>> > (h263VideoCapability) openLogicalChannel (h263VideoCapability)
>> > openLogicalChannel (h263VideoCapability) openLogicalChannel
>> > (h263VideoCapability) multiplexEntrySend multiplexEntrySend
>> > multiplexEntrySend multiplexEntrySend multiplexEntrySend
>> multiplexEntrySend
>> > multiplexEntrySend multiplexEntrySend multiplexEntrySend
>> multiplexEntrySend
>> > multiplexEntrySend multiplexEntrySend
>> >   3   0.000002      1.1.1.1 -> 2.2.2.2      H.245 multiplexEntrySend
>> > multiplexEntrySend multiplexEntrySend multiplexEntrySend
>> > terminalCapabilitySetAck terminalCapabilitySetAck
>> terminalCapabilitySetAck
>> > terminalCapabilitySetAck terminalCapabilitySetAck
>> terminalCapabilitySetAck
>> > terminalCapabilitySetAck terminalCapabilitySetAck
>> terminalCapabilitySetAck
>> > terminalCapabilitySetAck terminalCapabilitySetAck
>> terminalCapabilitySetAck
>> > terminalCapabilitySetAck terminalCapabilitySetAck
>> terminalCapabilitySetAck
>> > terminalCapabilitySetAck
>> >   4   0.000003      1.1.1.1 -> 2.2.2.2      H223
>> >   5   0.000004      1.1.1.1 -> 2.2.2.2      H223
>> >
>> > Any pointers on how to debug this would be much appreciated.
>> >
>> > Thanks,
>> > Dan
>> >
>> > PS - This is really great work and I'm very impressed with the project
>> and
>> > hope that I will be able to contribute as well.
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
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