[asterisk-users] disable client side hangup after dialing 911

[Patrick Fortin]

Hi

Has anyone tried to reproduce the following behavior that a standard phone 
line does with 911.

Normally if someone calls 911 and hangs up after the call has been 
established then the line is not dropped because it is held by the 911 agent.

If you pickup your phone you should still be connected to the 911 agent and 
be able to talk to him.

The call is dropped only when the 911 agent hangs up on his side.

Is there a way in asterisk to disable the hangup from the client after he 
has dialed 911 ?

Or maybe asterisk can keep the channel up and call back the user to 
re-establish the call until the hangup comes from the other side

Thanks

Patrick