[asterisk-users] Trixbox – Called party can't hangup

[Allan Dalton]

Hello,  
I apologise if this has been covered on this list in the past but I have 
been searching
for a couple of weeks for a solution and have not yet come across one.  
 
I have set up a basic click to call service on my trixbox. The service 
operates by creating
a call file and then once in the dialplan trixbox will call the other 
party.  
 
Both calls are outbound calls which are routed through my voip provider 
using
IAX2. I do not have any phones or phone lines connected to the trixbox.  
 
The issue I'm having is with trixbox being the initiator of both calls. 
As far as I'm aware
the Australian default is to only allow the initiator of the call to be 
able to terminate
the call (Unless the called party is behind a pabx or on a mobile).  
 
One of the called parties has to have the phone on the hook for 90 
seconds before
Telstra will disconnect the call.  

My question is there away around this?

I've done a slight work around where any party can press * to end the 
call but was hoping
for an option that would simply let them hangup the phone.

Is it possible for trixbox to detect when they have put the phone on the 
hook? 

I have read about reversing the line polarity but do not think that will 
help since the
calls are going through a voip provider instead of directly through PSTN.  
 
Is it possible to get trixbox to detect 10 seconds of silence and hang 
up on a bridge call? 

Any ideas on the matter would be greatly appreciated.  
 
Allan.