Log File Time Stamps

Can anyone help me time stamp my log files? For whatever reason it does not seem to be working

Due to the lack of documentation for this option I’m not quite sure ,but there is an option on the /etc/asterisk/asterisk.conf called timestamp , set it to yes and restart the asterisk service

timestamp = yes

http://lists.digium.com/pipermail/asterisk-users/2005-November/125188.html