asterisk users - May 2009 - h extension and channel variables

Is there a method to fetch the ${EXTEN} of the channel that has been 
hung up when exten h is started?

The nearest thing I can think of is to set another variable to the 
extension and pick that up. Would that be a reliable method though?

On 5/26/2009 10:57, Thomas Kenyon wrote:
> Is there a method to fetch the ${EXTEN} of the channel that has been
> hung up when exten h is started?
>
> The nearest thing I can think of is to set another variable to the
> extension and pick that up. Would that be a reliable method though?
>
Which is clearly a bad idea, since an intervening call would change this.

My Best idea so far is to change the CallerID to the exten (although it 
may be desirable to keep it in tact, it's not as important in this case).

Does anybody have any suggestions?