[asterisk-users] Possibility to catch DTMF when 2 users are in a conversation

[Antoine Fressancourt]

Hello,

I will expose my problem here. Please tell me if it is not the right  
place as I am really new to that list.

I use Asterisk as a SIP proxy. I have two users connected to it,  
Let's call them 1234 and 5678

In my dialplan I have two lines:

exten => 1234,1,Dial(SIP/1234)
exten => 5678,1,Dial(SIP/5678)

The SIP phones (X-lite) are configured to send DTMF's using RFC 2833  
mechanism.

I want to know if it is possible in Asterisk to catch a DTMF event  
sent by one of the phone to trigger an action, for example to play a  
sound/video clip to one of the phones.

Thank you very much in advance for your help,

Antoine