[Asterisk-Users] Avoided deadlock

[Asterisk]

Can anyone shed any light on why I am getting so many warnings on this 
particular channel - the lady using the phone says that she hasn't had 
any problems today. However, the number of warnings is concerning to me.

As you can see, the vast majority of the issues seem to be with the one 
phone.

Julian.

Jan 25 11:06:11 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:06:20 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:06:20 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:06:25 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:06:29 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:06:29 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:01 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:02 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:03 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:04 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:04 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:04 WARNING[24146]: Avoided initial deadlock for 
'Agent/6017', 10 retries!
Jan 25 11:07:04 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:05 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:05 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:05 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:06 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:10 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:17 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:17 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:17 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:23 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:23 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:27 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:31 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:31 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:31 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:35 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:37 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:37 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:37 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:37 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:39 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:40 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:40 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:46 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:46 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:49 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:49 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:51 WARNING[24146]: Unable to forward frame
Jan 25 11:07:51 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:51 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:58 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:07:59 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:08:03 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:08:14 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:08:21 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!
Jan 25 11:08:21 WARNING[24146]: Avoided deadlock for 'SIP/6711-89c7', 10 
retries!