[Asterisk-Users] Problems with native h323 channel on Asterisk RC2: No early audio and codec negotiation issues

[Michael Ulitskiy]

On Thursday 16 September 2004 04:27 am, Vlasis Hatzistavrou wrote:
> Hello all,
> 
> We have been testing Asterisk RC2 with the native H323 channel driver. 
> We followed the instructions with the needed OpenH323 and PWLib versions 
> and everything compiled ok. Operation of  the driver seems ok, except 
> from 2 main points:
> 
> 1) Audio is passed between the two ends of the call only after the call 
> is answered. This was not the case with previous versions of Asterisk 
> (0.9.2 for example), in which audio would begin before the call was 
> answered. Early audio is useful i order to provide the calling user with 
> remote end ringback as well as recorded announcements, etc.

You may want to look at/try this http://bugs.digium.com/bug_view_page.php?bug_id=0000562
 
> 2) The codec capabilities that Asterisk sends seem strange. No matter 
> which codecs we set in the h323.conf file, G711 is the only codec that 
> is sent in the capabilities. In order to use any other codec, we have to 
> enable only the needed codec and disable all others. Again, this problem 
> did not exist in older * versions, like 0.9.2 and it's limiting the 
> capabilities of Asterisk in H323.
> 
> Has anyone dealt with this problem successfully?
> 
> Best regards,
> 
> -- 
> Vlasis Hatzistavrou.
> 
> 
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