-- Executing Dial("SIP/2000-8f28", "Zap/g1/817600") in new stack
May 20 11:29:10 NOTICE[8362]: app_dial.c:759 dial_exec: Unable to create channel of type 'Zap'
  == Everyone is busy/congested at this time
May 20 11:29:20 WARNING[8362]: pbx.c:1949 ast_pbx_run: Timeout, but no rule 't' in context 'privileged'