asterisk users - Mar 2008 - Queue - Dynamic association

Hi all,

I was running asterisk 1.4.17 and all queue members execute a login in 
the queue with AddQueueMember() application. The problem is: when a 
agent transfer one call to another extension, the status off this agent 
is (In Use), and this agent doesn't is in the telephone. How i can make 
to put this agent in "Not in use" status after the call is transfered?

Thanks,

Rodrigo