[asterisk-users] How to get a clean, basic configuration?

[Vincent]

Hello

I'm using a standard Asterisk install with default settings, and when
I run "reload", I see that Asterisk fetches configuration information
from a lot more sources than just my extensions.conf and sip.conf.

For instance:

    -- Registered indication country 've'
    -- Registered indication country 'za'
    -- Setting default indication country to 'us'
  == Parsing '/etc/asterisk/features.conf': Found
  == Parsing '/etc/asterisk/adsi.conf': Found
  == Parsing '/etc/asterisk/dundi.conf': Found
  == Parsing '/etc/asterisk/extensions.conf': Found
  == Parsing '/etc/asterisk/users.conf': Found
[Feb 21 03:29:15] NOTICE[2563]: pbx_ael.c:4094 pbx_load_module:
Starting AEL load process.
[Feb 21 03:29:15] NOTICE[2563]: pbx_ael.c:4101 pbx_load_module: AEL
load process: calculated config file name
'/etc/asterisk/extensions.ael'.
etc.

How can I go and trim things down?

Thank you.