Just installed Asterisk 1.6, there is no database

im new to the forum, i have just installed Asterisk1.6 on centos5.4 by using yum, I can use asterisk -r enter CLI and asterisk is running. But when i enter mysqladmin realized there is no database call asterisk and asterisk_cdrdb. Is this normal?

Asterisk does not have a database. you can install a database to store the call data, but configs are done in the config files in the folder /etc/asterisk

First thanks for quick replay!

I also installed a2billing.
and i also edited extensions.conf just as the turial said.
here is my extensions.conf:



; CallingCard application
exten => _X.,1,Answer
exten => _X.,2,Wait,2
exten => _X.,3,DeadAGI,a2billing.php
exten => _X.,4,Wait,2
exten => _X.,5,Hangup

But when i use my phone to call my DID number, got this message from asterisk CLI:

[Apr 24 15:07:42] NOTICE[2927]: chan_sip.c:20059 handle_request_invite: Call from ā€˜1f8e7b0dā€™ to extension ā€˜5172191116ā€™ rejected because extension not found.

According to the tutorial i should hear the system say please enter your pin number.