Thanks for the response Brian.  I don't understand what bind_meta does, or how it can help me. Is it something I can use from my Python script?  I searched for a description of it, but I was unable to find one.  Could you please point me towards some documentation, or maybe quickly explain it?  Thanks.

 
>Date: Tue, 16 Dec 2008 11:30:46 -0600
>From: Brian West <brian@freeswitch.org>
>Subject: Re: [Freeswitch-users] Ending a bridged call with a touchtone
>To: freeswitch-users@lists.freeswitch.org
>Message-ID: <F9E12702-5CA0-45A8-B408-3F2162F94A8E@freeswitch.org>
>Content-Type: text/plain; charset="us-ascii"
>
>Try bind_meta, examples are in the default dialplan.
>
>/b
>
>On Dec 16, 2008, at 10:24 PM, Marc Orenberg wrote:
>
>> Hello.  I'm trying to allow the A-leg of a bridged call to be able 
>> to press a touchtone to end the call.
>> In my Python script, I set-up a DTMF callback function using 
>> setInputCallback, but it doesn't seem to have any effect during 
>> bridged calls. Is there another way to do this? Thanks.