X-lite error 404

Hello.
This he is my first post and my first experiences with asterisk.
It is that I have installed TRIXBOX 1,2 and I have formed 2 extensions to prove to make a call from an equipment to another one of my network with x-lite.

The case is that it gives east error me: Registration error 404 - Not found

To that it can have? Some idea?
I take to 3 days looking for information on the subject and nonencounter nothing.

sip.conf

[general]

port = 5060
bindaddr = 0.0.0.0
localnet=10.0.0.0/255.255.255.0
externip = 10.0.0.7
language=es

disallow=all
allow=ulaw
allow=alaw

context = from-sip-external
callerid = Unknown
tos=0x68

#include sip_nat.conf
#include sip_custom.conf
#include sip_additional.conf

Parametros X-Lite

en SIP Acount
User name: 111
Password: 111
Domain: 10.0.0.7
Domain Proxy:
proxy: 10.0.0.7:5060

The servant where I have installed it has an IP of 10.0.0.7 and attempt to accede from another PC connected with hub with he himself rank of IP.
When trying to connect with x-lite puts the error to me 404 that commented.
In addition I have been created 2 extensions, the 111 and the 222 (that original) with the equal passwords that the accounts.
Some idea or helps?
(it is what has this of being inexperienced! )
Thousand thanks.

nothing can help me ?

I spent 1 week and don?t work !!

thanks.

can You log in to asterisk CLI and see if ther is some errors/warnings when x-lite try to connect to * box ? (asterisk -r )
if there is no errors/warnings, then Your x-lite is misconfigured and did not connect to * box.

Hi, create extension???
in sip.conf

[111]
type=friend
username=111
callerid= “yourname” <111>
host=dynamic
allow=ulaw
allow=alaw

it’s basic!!!

in [general]

#disallow
#allow=ulaw
#allow=alaw
#callerid
#externip
#localnet

In X-lite

domain: IP local(your pc)

OK!

yes alvesrj.

I solve the problem create the extension manual.

I think that FreePBX do it automactically when create a new extension, but I see that no.

Then … there are some solution in web interface that change the configuration ?

FreePBX not work ? What files change freePBX ?

Thanks a lot to all for this newbie.

In FreePBX the extensions are stored in sip_additional.conf