[asterisk-users] phone rings "once" before playing message

[Joseph]

My phone rings "once" and stops before playing message; how to stop this behavior.

Could it have something to do with this error:

  channel_find_locked: Avoided initial deadlock for '0x81c04d0', 9 retries!


Here is the dial plan:
exten => s,1,Wait(2)
exten => s,2,Answer
exten => s,3,SetMusicOnHold(default)
exten => s,4,Background(office-closed)
exten => s,5,Voicemail(441)
exten => s,6,Hangup()
-- 
#Joseph