[asterisk-dev] DTFM question

[Mauricio Henriquez]

Hi Guys:

First post to the list, so Hi to all...

I'm really lost here, I run a fedora 8 and I have a external trendnet 
TMF-560X and a couple of internal "linuxant" modems (don't know if can 
be used for what I want..) an I need to do "simple" DTMF detection. I 
post to the dev list becouse I'm a programmer and I need to do this DTMF 
detection from a program, currently from my C and C# (mono/linux) I can 
send AT commands to the modem, but then I'm lost about what is need to 
do to detect DTMF tones like the one used for voice menus, etc.

So, I think that a extermal program is needed to do that like asterix, 
is posible to interact with asterix software to do this task?, and as 
curiosity how that is doit? (I mean a program to do that from zero have 
to "read" the sound from the modem line and run a algorithm to detect 
the DTMF tone? or is more like a HW capability?)..I ask that becouse I 
find a example C program that can capture sound from input line, may ca 
be use to capture data from modem line?..)

Any info is going to be appreciated..

thanks

Mauricio