Asterisk Performance Tuning

Asterisk Performance Tuning I need a system coder to tune Asterisk Free PBX for best voice performance. The coder is expected to, - Provide the configuration files for Asterisk Free PBX that will provide best performance - Provide a routine to test the pre and post configuarion voice performance of Asterisk. That will be used as a measure for the project? success.? The setup for the PBX is as follows; (Softphone-onPC)--(AstersikFreePBXServer-onLinux)--(VoIP-to-GSMGateway)--(MobileOperatorNetwork)--(MobilePhone) - ? The overall voice performance is expected to be below 200 ms (i.e: from soft phone user to mobile user). Good luck