== Starting Zap/1-1 at outbound,s,1 failed so falling back to exten 's'
  == Starting Zap/1-1 at outbound,s,1 still failed so falling back to context 'default'
Jan 18 15:47:28 WARNING[17894]: pbx.c:2347 __ast_pbx_run: Channel 'Zap/1-1' sent into invalid extension 's' in context 'default', but no invalid handler
    -- Hungup 'Zap/1-1'
  == Spawn extension (inbound, s, 3) exited non-zero on 'Zap/3-1'
    -- Hungup 'Zap/3-1'