Feb 17 01:49:02 VERBOSE[24901] logger.c:     -- x=0, open writing:  /var/spool/asterisk/voicemail/NN/100/INBOX/msg0000 format: gsm,wav, (nil)
Feb 17 01:49:02 WARNING[24901] app.c: Error creating writestream '/var/spool/asterisk/voicemail/NN/100/INBOX/msg0000', format 'gsm,wav'
Feb 17 01:49:02 WARNING[24901] app_voicemail.c: Failed to open log file: /var/spool/asterisk/voicemail/NN/100/INBOX/msg0000.gsm,wav: No such file or directory
Feb 17 01:49:02 VERBOSE[24901] logger.c:   == Spawn extension (macro-extwvm, s, 2) exited non-zero on 'IAX2/test-4' in macro 'extwvm'
Feb 17 01:49:02 VERBOSE[24901] logger.c:   == Spawn extension (NN_extensions, 100, 1) exited non-zero on 'IAX2/test-4'
Feb 17 01:49:02 VERBOSE[24901] logger.c:     -- Hungup 'IAX2/test-4'