Asterisk configuration

Hi all,
I have just installed Asterisk server and want to use clients to make calls, can anyone tell me how do I configure stuff on Asterisk like users , domain, realms etc. Thanks in advance.

Regards,
Nishesh

at the top of the forum is a “sticky” thread … with links to a free book on Asterisk and the voip-info wiki.

go read all that first before asking for help here please.