how to reduce CPU load and improve voice quality on mobile device FR

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Hi,

We are having a problem with running PJSIP on the neo freerunner, and have tried a
 variety of solutions to fix this but still not successful.   The setup
 that we are using is PJSIP on a Mac with OSX, and PJSIP compiled for
openmoko.I compiled PJSIP for openmoko by setting the env using command
 source /usr/local/openmoko/arm/setup-env
and ./configure --host=arm-angstrom-linux-gnueabi.
 
 When we run PJSIP between the Mac and Openmoko, we are encountering  problems. 
The  problem is that the sound quality is very bad. When we speak
 into the Mac, the sound coming from the Openmoko comes out in stutters
(on and off every half second). It is also full of static.  
When we try a VOIP call directly from mac to mac, it works and sounds fine.  

I looked at the CPU load and found that it is almost 80% on freerunner and 25 % on Mac OS X.
I have tried with different codecs e.g. speex ,PCMA and GSM.

Please advise me that how can I reduce the CPU load. I have followed the following http://trac.pjsip.org/repos/wiki/FAQ#cpu but 
no improvement.

Thanks in advance.

Tarun



      
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