Bad sound on calling sip client, not on PlayBack in Asterisk

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Call a Sip user on an Asterisk Box using Red5Phone
2.
3.

What is the expected output? What do you see instead?

The sound is very buggy and sometimes you hear soemthing. When you call to a 
Playback extention, the sound it great and clear.

We have tested this on two systems, two different guys. One had also a bad 
noisy sound on echo() the other one had a great echo() on Asterisk

What version of the product are you using? On what operating system?

- All versions of Red5Phone
- Ubuntu 11.04 with 0.9.1 (and bad echo sound)
- Debian Squeeze with 0.9.1 (and good echo sound)

Please provide any additional information below.

Calling with normal sip clients is good, great quality. At the server side 
there is NO NAT or FIREWALLING involved, direct public IP.

Can this something on the client side with NAT ? If so, it's unusable, but I 
doubt because o fthe clear playback sound.

Original issue reported on code.google.com by yamakasi...@gmail.com on 27 Oct 2011 at 11:45

[GoogleCodeExporter]

I hope you are referring to choppy audio with jitters. If yes, you can try a 
few things like:

1. Enabling jitter buffer on asterisk. You can use dynamic or fixed jitter 
buffering.

2. If you can code, then have a look at the voicebridge project here done by 
Dele himself
http://code.google.com/p/red5-voicebridge/
It has a jitter buffer implemented. You can implement one for your system. 
Should provide you better audio output.

Also try to use the latest G711 version of the red5phone. Gets rid of the 
Nellymoser encoding/decoding and should get you optimum performance.

Thanks,
Hari

Original comment by harikuma...@gmail.com on 28 Oct 2011 at 5:32

[GoogleCodeExporter]

Hi Hary,

Thanks for your reply. The sound is choppy for sure and there is noise like 
there is a 50Hz transformer interfering on the line.

I have made your settings, which didn't fix it yet.

My Red5/Asterisk Box is on a Virtual Maxhine using Vbox, but I doubt if that's 
the issue as other clients sound great.

I'm running on 54, which should be okay. 

I know for sure people have this running well, so we should here also :)

Thanks so far!

Cheers,

Matt

Original comment by yamakasi...@gmail.com on 28 Oct 2011 at 7:52