-- Executing Ringing("Zap/2-1", "") in new stack
    -- Executing NVFaxDetect("Zap/2-1", "5|dt") in new stack
Oct  8 13:06:54 NOTICE[17862]: app_nv_faxdetect.c:216 nv_detectfax_exec: Redirecting Zap/2-1 to fax extension
    -- Executing RxFAX("Zap/2-1", "/tmp/bigu.tif") in new stack
    -- Hungup 'Zap/2-1'