Thanks for your advice. But i want to download and install asterisk and freepbx myself. Now please can you advice me at right operation system and right installation tutorial?
Now i have one problem. I have solved %90.
When i click “Asterisk Modules” under Admin menu. There are 3 options unde Asterisk Modules, these are Excluded Modules, Preloaded Modules and Manually loaded modules.
First there is not chan_sip.so module under this menu.
Second , when i click “add” button any of these 3 options so i get this error message.
FATAL ERROR
FreePBX is Unable to Continue
Wasn’t given a module to preload
Trace Back
/var/www/html/admin/modules/core/Core.class.php:66 ModulesConf->preload()
[0]: