Hi Mike, I think you should check a couple of things, first check the PJMEDIA benchmarks, http://trac.pjsip.org/repos/wiki/PJMEDIA-MIPS What codec to you use, is echo cancellation enabled, is resampling done, different samplings freq on sound device/conf bridge/codec Most likely it's either long AEC or un optimzed codec. Check what you get if AEC is disabled and if you only run a simple codec like G711. Hiope this helps / Olle _____ From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Mike Kraimer Sent: den 26 maj 2009 13:00 To: pjsip list Subject: Performance Issues Hello, Can somebody help me with the stages needed to detect performance issues? When I make a call using pjsua on a Windows Mobile device, the CPU rises to 100%. Where can be the problem? Thanks, Mike Kraimer. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090526/8b89e50f/attachment.html>