[Asterisk-Users] Chan_oh323 problem

[Michael Manousos]

Andrey Tyushkin wrote:
> Hello
>  
> I have the following problem using chan_oh323
> I have DialGate 2160 for SystemBas (www.sysbas.com 
> <http://www.sysbas.com>) connected to PSTN
> (H.323 to FXO/FXS gateway)
> when i try to make call form one pstn phone to other trough asterisk or 
> when i make call from software h.323 client trough asterisk and this 
> gateway to pstn i have the problem with voice quality.
> The side that initiated call can be heared clearly, but the side that 
> answered the call can be heared aproximatly at half.
> E.g. on this side everything is heared with some cuts.
> I runed asterisk -vvvc
> and during the call it constantly printning:
> WARNIGN .. File chan_oh323.c, Line 761 (oh323_read) H323:20016 Requested 
> read buffer size is too long (2560) !
> and next line message about truncating buffer.
>  
> I've changed OH323_MAX_BUF to 2560 - warning message disappeared but it 
> didn't improove the quality.
>  

These messages are just warnings, voice data don't get lost.
I think that the problem is on the direction from Asterisk
to the H.323 endpoint. There is a problem on this direction.
Some RTP packets have wrong timestamps and are dropped on the other
end, causing some voice gaps.
I think I have fixed it (some more test), and soon I will make
a new release.


> I configures Milliwatt aplication and when i ring from PSTN i hear 
> beeps, not continuees tone
> and its printning warning message in line 1460 : Only doing 640 bytes 
> (1280 bytes requested)
> (sometimes prints 2560 bytes requested)
> (from soft client almost everything is ok, only some seldom clicks)
>  
> I thought that this is the problem of dialgate, but when i use it w/o 
> asterisk it works w/o this problems.
>  
> Thanks in advance,
> Andrey


Michael.