Hi,
I want to register two SIP accounts so that they can call each other, for this purpose I have added two extension 1100.xml and 1200 by coping 1000.xml and then edit my dialplan so that it can find my added extension like this

<condition field="destination_number" expression="^(10[01][0-9]|1100|1200)$">

and finally i reloaded xml's through fs_cli, I am using Zoiper(soft-phone) for testing, Now the problem is when i register an account in Zoiper with 1100 extension it in is not registering it.

After digging out this problem i found out that my user is not registered except 1000.xml, by executing the list_users command and sofia contact 1100 (there is an attached Image), how can i register one.
Kindly guide me is there any thing i am missing OR i have to do some thing else for "registering two SIP accounts so that they can call each other".