asterisk users - Jan 2006 - SIP IP Phone is not registering [urgent]

Hi guys,

I have one serius problem, some time our customers IP
Phones are not able to register, when i start to
geting the following logs.

WARNING[30665] channel.c: Avoided initial deadlock for
'0x9106ef8', 10 retries! 

I am usuing realtime for sip registration the ttl of
phone is 10 or 20.

Please advise me to solve this issue, i will be
appricate for your replies.



--------
Yours,
Abdul Lateef
Computer Programmer
HATIF COM
Mob: +974 - 5405022
ICQ: 276994704
MSN: abdulzu@hotmail.com
GoogleTalk: lateef.np@gmail.com
YM!: abdul_zu
Doha Qatar
http://www.hatif.com

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