Can I find out whether it is possible to achieve this.
I would also like them to work with a dialler, cutting out Voicemails, no
answers and out of service calls giving them only calls that are live
With the dialer Ideally I would input a group of numbers into some type of
system (i.e
While no voicemail/answering machine-detection method is perfect, the
app_amd Asterisk module works pretty well if you tune it to your
setup.
The two Asterisk-based GPL Dialers both have this capability:
GnuDialer - http://www.gnudialer.org/
VICIDIAL-