I have installed everything out of box:
[root@voip1 ~]# asterisk -rvvvvvvvvvvvvvvvvvvvvvvv
Asterisk 11.25.0, Copyright (C) 1999 - 2013 Digium, Inc. and others.
Created by Mark Spencer <markster@digium.com>
Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.
This is free software, with components licensed under the GNU General Public
License version 2 and other licenses; you are welcome to redistribute it under
certain conditions. Type 'core show license' for details.
Connected to Asterisk 11.25.0 currently running on voip1 (pid = 3100)
voip1*CLI> logger show channels
Channel Type Status Configuration
Console Enabled - DEBUG NOTICE WARNING ERROR VERBOSE
/var/log/asterisk/full File Enabled - DEBUG NOTICE WARNING ERROR VERBOSE
voip1*CLI>
There is no /var/log/asterisk/messages in above, however /var/log/asterisk/messages does exist and contain SOME info...