[Oct 11 15:49:15] WARNING[5159]: app_dial.c:1750 dial_exec_full: Unable to create channel of type 'DAHDI' (cause 0 - Unknown)
[Oct 11 15:49:15] WARNING[5159]: file.c:650 ast_openstream_full: File all-circuits-busy-now does not exist in any format
[Oct 11 15:49:15] WARNING[5159]: file.c:953 ast_streamfile: Unable to open all-circuits-busy-now (format 0x4 (ulaw)): No such file or directory
[Oct 11 15:49:15] WARNING[5159]: app_playback.c:471 playback_exec: ast_streamfile failed on SIP/211-00000004 for all-circuits-busy-now,noanswer
[Oct 11 15:49:15] WARNING[5159]: file.c:650 ast_openstream_full: File pls-try-call-later does not exist in any format
[Oct 11 15:49:15] WARNING[5159]: file.c:953 ast_streamfile: Unable to open pls-try-call-later (format 0x4 (ulaw)): No such file or directory
[Oct 11 15:49:15] WARNING[5159]: app_playback.c:471 playback_exec: ast_streamfile failed on SIP/211-00000004 for pls-try-call-later,noanswer