[Asterisk-Users] X100P Tone-based Supervisory Disconnect ?

[Gelson Dias Santos]

    Hello all,
    Through the previous two weeks I have been working on my first 
asterisk installation. So far all my doubts and problems were aswered by 
the list history or on-line documentation. I have a two SIP softphones + 
external analog line working fine. However, I just came across a 
documented problem that as far as I can tell there is no good answer: 
the X100P FXOdoes not  hung up  when  the remote end disconnects. I have 
a X100P connected to an extension of my company PBX. When I get an 
incoming call, it stays up even when the caller disconnects and I have 
to use a soft hungup.
     I  have already tried all signalling methods (ks, gs, ls) with no 
luck. Searching  on the web I found a good description of the problem on 
the Cisco site: 
http://www.cisco.com/warp/public/788/signalling/fxo_disconnect.html
    There is a method of hang up detection there called Tone-based 
Supervisory Disconnect. It seems to me that it would fix my problems, 
because my company PBX does send some fast tones when the line gets 
disconnected by the remote end.
    Does asterisk have this feature? How can I turn it on?

    Thanks a lot,
    Gelson