I can say that I am new with Asterisk but very interested know how I can do this.
I am currently struggle my problem that how I can make restrictions.
I have extension/extension groups 100 000 - 199 999 and 200 000 - 299 999. How I can make rule that only allow internal call between 100 000 - 199 999 extensions but not can’t make call 200 000 - 299 999?
I have understand that I need to make own .conf file which I need include extensions.conf?