vicidial.org

While making calls with Predictive dailer and hard phones on Vicidial, is it possible to get called number and name on the digital display of the hard phone (Zed-3 Phones or grand stream phones)

Thanks in Advance

Not usually.

CallerID is sent per call not at random intervals. You could try something like SIPSAK to send SIP messages, but that is not consistent from phone to phone and usually requires the more advaned phones like SNOM 360.