asterisk users - Jan 2007 - Show call coming back from Call Parking

Our operator has asked if it is possible that when a call times out in
the call parking and comes back to her, if there is someway to show that
call has come back from parking.  I have looked all over the
documentation and have come up with nothing so far.

All I see when a call times out is:    
-- Stopped music on hold on Zap/25-1
  == Timeout for Zap/25-1 parked on 702. Returning to
park-dial,SIP/214,1
    -- Executing Dial("Zap/25-1", "SIP/214||t") in new stack
    -- Called 214
    -- SIP/214-09086ff8 is ringing

It appears that the "park-dial" is a context that Asterisk
autogenerates
so there is nothing I can do in that context.

Has anyone else found a way to show that this a call returning and not a
new call coming in?

Thanks

Asterisk User List wrote:
> Our operator has asked if it is possible that when a call times out in
> the call parking and comes back to her, if there is someway to show that
> call has come back from parking.  I have looked all over the
> documentation and have come up with nothing so far.
> 
> All I see when a call times out is:    
> -- Stopped music on hold on Zap/25-1
>   == Timeout for Zap/25-1 parked on 702. Returning to
> park-dial,SIP/214,1
>     -- Executing Dial("Zap/25-1", "SIP/214||t") in new
stack
>     -- Called 214
>     -- SIP/214-09086ff8 is ringing
> 
> It appears that the "park-dial" is a context that Asterisk
autogenerates
> so there is nothing I can do in that context.
> 
> Has anyone else found a way to show that this a call returning and not a
> new call coming in?
[park-dial]
exten => _.,1,SetCIDName(Parking Timeout)
exten => _.,2,SetVar(__ALERT_INFO=Triplet)
exten => _.,3,Goto(extensions,3500,1)