[Asterisk-video] problems getting basic h324m_loopback() working

[josemrecio at gmail.com]

Hi, Klaus !!!
Thanks for your answer !!!
I have not tested with SIP clients yet: I am calling from a 3G handset to
the Asterisk, trying to get h324m_loopback() to work.
Problem seems to be that H.324M negotiation does not complete.
With Motorola V3xx there appear BAD CRC errors (I won't use V3xxx again).
With Nokia N73, it seems negotiation starts OK but does never complete.
Check out the message I have just sent :-(
Thanks !!!
Jose



-----Mensaje original-----
De: asterisk-video-bounces at lists.digium.com
[mailto:asterisk-video-bounces at lists.digium.com] En nombre de Klaus Darilion
Enviado el: miércoles, 02 de enero de 2008 11:46
Para: Development discussion of video media support in Asterisk
Asunto: Re: [Asterisk-video] problems getting basic h324m_loopback() working

Hi Jose!

CAll drops after 30 seconds are usually NAT problems where the ACK is not
sent to the SIP client.

Watch the SIP traffic if there is ACK after INVITE-200 OK (if you see
retransmissions of 200OK then the ACK did not make it till the SIP client).

regards
klaus

Jose M. Recio schrieb:
> I am having some problems with the first and h324m_loopback() test.
> The calling party (the handset) drops the call after aprox. 30 
> seconds, I think the problem is related with the negotiation, but not 
> sure. Could you take a look, please?
> 
> Setup: 
> - Hw: Junghanns duoBRI card.
> - Sw: bristuff-0.4.0-test4.tar.gz (this includes asterisk-1.4.9, 
> zaptel 1.4.4, libpri-1.4.1)
> - zaptel + qozap driver
> - Testing with Nokia N73 and Motorola V3xx.
> - It works fine with incoming and outgoing regular voice calls.
>  
> This is my extensions.conf:
> [demo]
> exten => CALLED,1,Answer()
> exten => CALLED,n,h324m_loopback()
>  
> Log attached (CALLED and CALLING numbers hidden), I will send the 
> dumps if required, but do not want to flood the list. Summary:
> 
> h324m_loopback
> H245 TerminalCapabilitySet TransferRequest -WriteControlPDU [request] 
> Encode PDU [95] Sending CMD [0,87]
> H245 Request MasterSlaveDetermination
> -WriteControlPDU [request]
> Encode PDU [20]
> Sending CMD [1,7]
> Sending CMD [0] - 1 left
> Received SRP_NSRP_RESPONSE [0]
> Sending CMD [1] - 0 left
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> Received SRP_NSRP_RESPONSE [1]
> app_h324m_loopback: exit
> 
> 
> 
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