Archived:Bluetooth L2CAP error -6305 (Known Issue)
This error is due to physical link activation and closing events collision. Occasionally an application can use a sending interval that happens when the Physical Link and HCI are in the middel of a state transition. S60 2nd Edition, Feature Pack 3 implementation allows for a new activation while the link is actually being closed down - and therefore the -6305 error.
One workaround to this problem is to have constant traffic on the channel to avoid the physical link idle timer to go off and close the connection.
This problem is corrected in S60 3rd Edition and no workarounds are needed.