[asterisk-users] Detecting answer with an analogue card

[Andrew Kohlsmith]

On Monday 05 February 2007 5:18 am, George Camilleri wrote:
> How does going digital help?

Digital calls have a state associated with them.  They can tell if the far end 
actually picked up (i.e. answered) or not.  Analog devices can't do this, or 
rather you can make them try (progressdetect) but it's difficult and as such, 
results are unpredictable.

-A.