-- Accepting AUTHENTICATED call from 66.187.176.100:
       > requested format = ulaw,
       > requested prefs = (ulaw|alaw|gsm),
       > actual format = ulaw,
       > host prefs = (ulaw|alaw|gsm),
       > priority = mine
    -- Executing Set("IAX2/vpf01-to-avanade-voice-3", "FROM_DID=4047510895") in new stack
    -- Executing Set("IAX2/vpf01-to-avanade-voice-3", "FAX_RX=system") in new stack
    -- Executing Set("IAX2/vpf01-to-avanade-voice-3", "FAX_RX_EMAIL=sajjaad.hoossainy@avanade.com") in new stack
    -- Executing Answer("IAX2/vpf01-to-avanade-voice-3", "") in new stack
    -- Executing PlayTones("IAX2/vpf01-to-avanade-voice-3", "ring") in new stack
  == Spawn extension (from-pstn, 4047510895, 6) exited non-zero on 'IAX2/vpf01-to-avanade-voice-3'
    -- Hungup 'IAX2/vpf01-to-avanade-voice-3'