Definition of dial in:
(v) :
To connect (to a system or service) by telephone.
(v) :
To join or participate in (a conference call).
(v) :
To configure or set up (particularly a complex machine with many configuration options [especially knobs and dials]).
(v) :
(figurative) To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).