We are dialing with SIP or IAX2 trunks in autodialing mode.
We have around 200 000 NA status (a lot). A part of them are real NA and the others are disconnected numbers, but we don't know which of them. And we are not calling them anymore, because the agents start waiting between calls about 5-10 minutos so it's a waste of time with the disconnected numbers.
How can we know which are disconnected numbers, and which are real NA in autodial mode?
For example if from those 200 000 NA numbers, there are 50 000 real NA, and with vicidial in autodial mode we can recover 40 000 - 45 000, it would be excellent (not a big deal if we lost the 5% or 10%). We rather call than don't.
thanks