Outbound calls

How to configure outbound calls ? I have a problem with a trunk configuration with sip provider … Do you have some tutorials about that ?

When i try calling from phone to my mobile number i hear “The number you have dialed is not in service”

any ideas ?

I have this notice in CLI asterisk after try call:

[Apr 1 13:49:23] NOTICE[3742][C-0000003b]: chan_sip.c:23018 handle_response_invite: Failed to authenticate on INVITE to ‘“voippwsz” sip:[email protected];tag=as564a7d69’
[Apr 1 13:49:23] WARNING[5465][C-0000003b]: file.c:701 ast_openstream_full: File all-circuits-busy-now does not exist in any format
[Apr 1 13:49:23] WARNING[5465][C-0000003b]: file.c:1017 ast_streamfile: Unable to open all-circuits-busy-now (format (ulaw)): No such file or directory
[Apr 1 13:49:23] WARNING[5465][C-0000003b]: app_playback.c:484 playback_exec: ast_streamfile failed on SIP/100-0000005d for all-circuits-busy-now,noanswer
[Apr 1 13:49:23] WARNING[5465][C-0000003b]: file.c:701 ast_openstream_full: File pls-try-call-later does not exist in any format
[Apr 1 13:49:23] WARNING[5465][C-0000003b]: file.c:1017 ast_streamfile: Unable to open pls-try-call-later (format (ulaw)): No such file or directory
[Apr 1 13:49:23] WARNING[5465][C-0000003b]: app_playback.c:484 playback_exec: ast_streamfile failed on SIP/100-0000005d for pls-try-call-later,noanswer

someone can help me ?