Configuration :Outbound with engage_media_proxy (See the attachment )
Shared Mem : 1024 MB
Dialog TimeOut : 600 (Seconds)
Problem : Dialog's are not cleared sometimes , So after sometime server is not responding , but plenty of shared memory is available,
56 MB only used out of 1024 MB , there is no out of memory error but server is not responding until restart the server , there is no error in kamailio log also
After investigating long time , the problem is non confirmed dialog's are not cleared even dialog timeout