-- Attempting call on IAX/6002 for 600@default:2 (Retry 1)
[May 14 21:40:05] WARNING[27815]: channel.c:3099 ast_request: No channel type registered for 'IAX'
[May 14 21:40:05] NOTICE[27815]: channel.c:2942 __ast_request_and_dial: Unable to request channel IAX/6002
[May 14 21:40:05] WARNING[27815]: cdr.c:760 ast_cdr_init: CDR already initialized on '**Unknown**'
[May 14 21:40:05] NOTICE[27815]: cdr.c:430 check_start: CDR on channel '**Unknown**' already started
[May 14 21:40:05] NOTICE[27815]: pbx_spool.c:341 attempt_thread: Call failed to go through, reason 0