[asterisk-dev] DTMF detection and generation code

[Chris Lee]

Steve Underwood wrote:
> Anything which cares about the length of a DTMF digit, other than 
> meeting the requred minimum, is badly broken.

Maybe so, but why should we decide to remove information from the 
communication?
We are moving forward here, duration is information that can be used to 
advantage by applications if it is received, why remove Asterisk from 
the pool of systems that can cater for such applications, if they are 
developed?

I agree that a minimum duration should be produced but, if the button is 
held down longer, then the other end may want to know.

Disclaimer: I am in the process of developing such an application; 
Asterisk can not work for us yet but other products work well. We use 
Cellular/PSTN (various networks) to ISDN to IP to IVR without any user 
impacting variance in tone length detection, variance of +-80ms is 
acceptable for our application.
So our app is not broken unless we try to use Asterisk to drive the calls.


Regards
Chris.